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19068164881920 = 293357311217223
BaseRepresentation
bin1000101010111101001110…
…01100011011111000000000
32111111220021012021212022000
410111132213030123320000
54444403100202210140
6104315443301344000
74005425621142000
oct425364714337000
974456235255260
1019068164881920
116091843a73900
12217b655a08000
13a841741c806b
1449cc92c12000
15231017a8ba30
hex1157a731be00

19068164881920 has 5760 divisors, whose sum is σ = 96238340352000. Its totient is φ = 3567007825920.

The previous prime is 19068164881879. The next prime is 19068164881949. The reversal of 19068164881920 is 2918846186091.

19068164881920 is a `hidden beast` number, since 1 + 9 + 0 + 68 + 1 + 6 + 488 + 1 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (5760).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 829050647029 + ... + 829050647051.

It is an arithmetic number, because the mean of its divisors is an integer number (16708045200).

Almost surely, 219068164881920 is an apocalyptic number.

19068164881920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19068164881920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48119170176000).

19068164881920 is an abundant number, since it is smaller than the sum of its proper divisors (77170175470080).

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

19068164881920 is a wasteful number, since it uses less digits than its factorization.

19068164881920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 63.

The spelling of 19068164881920 in words is "nineteen trillion, sixty-eight billion, one hundred sixty-four million, eight hundred eighty-one thousand, nine hundred twenty".