78937915032 has 24 divisors (see below), whose sum is σ = 213790186740. Its totient is φ = 26312638320.

The previous prime is 78937914989. The next prime is 78937915051. The reversal of 78937915032 is 23051973987.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×78937915032² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78937915032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 548179894 + ... + 548180037.

Almost surely, 2^78937915032 is an apocalyptic number.

78937915032 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78937915032 is an abundant number, since it is smaller than the sum of its proper divisors (134852271708).

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

78937915032 is a wasteful number, since it uses less digits than its factorization.

78937915032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096359943 (or 1096359936 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 78937915032 in words is "seventy-eight billion, nine hundred thirty-seven million, nine hundred fifteen thousand, thirty-two".