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20753830108061 = 471313370769873
BaseRepresentation
bin1001011100000001000001…
…01010111101101110011101
32201111001021002210201112122
410232000200222331232131
510210012321001424221
6112050102233312325
74241262154145651
oct456004052755635
981431232721478
1020753830108061
116681717054646
1223b22938656a5
13b77101b6a00b
1451a6c2820a61
1525ecc4b99eab
hex12e020abdb9d

20753830108061 has 8 divisors (see below), whose sum is σ = 21357197921664. Its totient is φ = 20157203834560.

The previous prime is 20753830108027. The next prime is 20753830108069. The reversal of 20753830108061 is 16080103835702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20753830108061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20753830108069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685378780 + ... + 1685391093.

It is an arithmetic number, because the mean of its divisors is an integer number (2669649740208).

Almost surely, 220753830108061 is an apocalyptic number.

It is an amenable number.

20753830108061 is a deficient number, since it is larger than the sum of its proper divisors (603367813603).

20753830108061 is a wasteful number, since it uses less digits than its factorization.

20753830108061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370770051.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 20753830108061 in words is "twenty trillion, seven hundred fifty-three billion, eight hundred thirty million, one hundred eight thousand, sixty-one".

Divisors: 1 47 131 6157 3370769873 158426184031 441570853363 20753830108061