78915582372 has 24 divisors (see below), whose sum is σ = 200876028192. Its totient is φ = 23913812800.

The previous prime is 78915582359. The next prime is 78915582373. The reversal of 78915582372 is 27328551987.

It is a super-2 number, since 2×78915582372² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78915582373) 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, 298922529 + ... + 298922792.

It is an arithmetic number, because the mean of its divisors is an integer number (8369834508).

Almost surely, 2^78915582372 is an apocalyptic number.

It is an amenable number.

78915582372 is an abundant number, since it is smaller than the sum of its proper divisors (121960445820).

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

78915582372 is a wasteful number, since it uses less digits than its factorization.

78915582372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597845339 (or 597845337 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 57.

The spelling of 78915582372 in words is "seventy-eight billion, nine hundred fifteen million, five hundred eighty-two thousand, three hundred seventy-two".