51916795884720 has 240 divisors, whose sum is σ = 193822705719552. Its totient is φ = 12367276369920.

The previous prime is 51916795884691. The next prime is 51916795884739. The reversal of 51916795884720 is 2748859761915.

It is a happy number.

51916795884720 is a `hidden beast` number, since 5 + 1 + 9 + 1 + 6 + 79 + 5 + 88 + 472 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89172199 + ... + 89752518.

Almost surely, 2^{51916795884720} is an apocalyptic number.

It is an amenable number.

51916795884720 is an abundant number, since it is smaller than the sum of its proper divisors (141905909834832).

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

51916795884720 is a wasteful number, since it uses less digits than its factorization.

51916795884720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178924780 (or 178924771 counting only the distinct ones).

The product of its (nonzero) digits is 304819200, while the sum is 72.

The spelling of 51916795884720 in words is "fifty-one trillion, nine hundred sixteen billion, seven hundred ninety-five million, eight hundred eighty-four thousand, seven hundred twenty".