71957162916 has 36 divisors (see below), whose sum is σ = 188628450192. Its totient is φ = 23985720648.

The previous prime is 71957162903. The next prime is 71957162939. The reversal of 71957162916 is 61926175917.

71957162916 is a `hidden beast` number, since 7 + 1 + 9 + 5 + 7 + 1 + 629 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37014030 + ... + 37015973.

It is an arithmetic number, because the mean of its divisors is an integer number (5239679172).

Almost surely, 2^71957162916 is an apocalyptic number.

It is an amenable number.

71957162916 is an abundant number, since it is smaller than the sum of its proper divisors (116671287276).

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

71957162916 is a wasteful number, since it uses less digits than its factorization.

71957162916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74030022 (or 74030008 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The spelling of 71957162916 in words is "seventy-one billion, nine hundred fifty-seven million, one hundred sixty-two thousand, nine hundred sixteen".