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20453603123124 = 22381066773063
BaseRepresentation
bin1001010011010001110011…
…01111111001111110110100
32200102100022202202200000000
410221220321233321332310
510140102434344414444
6111300131111151300
74210503231655533
oct451507157717664
980370282680000
1020453603123124
116576362814196
122364066375530
13b549c6cc65c2
14509d614b431a
152570a2601469
hex129a39bf9fb4

20453603123124 has 108 divisors (see below), whose sum is σ = 53693748405024. Its totient is φ = 6817135246416.

The previous prime is 20453603123119. The next prime is 20453603123167. The reversal of 20453603123124 is 42132130635402.

20453603123124 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 3 + 603 + 1 + 23 + 1 + 24 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 279908217 + ... + 279981279.

Almost surely, 220453603123124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20453603123124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26846874202512).

20453603123124 is an abundant number, since it is smaller than the sum of its proper divisors (33240145281900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20453603123124 is an equidigital number, since it uses as much as digits as its factorization.

20453603123124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83758 (or 83735 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 20453603123124 its reverse (42132130635402), we get a palindrome (62585733758526).

The spelling of 20453603123124 in words is "twenty trillion, four hundred fifty-three billion, six hundred three million, one hundred twenty-three thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 243 324 486 729 972 1458 2187 2916 4374 6561 8748 10667 13122 21334 26244 32001 42668 64002 73063 96003 128004 146126 192006 219189 288009 292252 384012 438378 576018 657567 864027 876756 1152036 1315134 1728054 1972701 2592081 2630268 3456108 3945402 5184162 5918103 7776243 7890804 10368324 11836206 15552486 17754309 23328729 23672412 31104972 35508618 46657458 53262927 69986187 71017236 93314916 106525854 139972374 159788781 213051708 279944748 319577562 479366343 639155124 779363021 958732686 1558726042 1917465372 2338089063 3117452084 4676178126 7014267189 9352356252 14028534378 21042801567 28057068756 42085603134 63128404701 84171206268 126256809402 189385214103 252513618804 378770428206 568155642309 757540856412 1136311284618 1704466926927 2272622569236 3408933853854 5113400780781 6817867707708 10226801561562 20453603123124