78165588328 has 64 divisors (see below), whose sum is σ = 158614848000. Its totient is φ = 35971322880.

The previous prime is 78165588323. The next prime is 78165588337. The reversal of 78165588328 is 82388556187.

It is a super-2 number, since 2×78165588328² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78165588323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8938038 + ... + 8946778.

It is an arithmetic number, because the mean of its divisors is an integer number (2478357000).

Almost surely, 2^78165588328 is an apocalyptic number.

It is an amenable number.

78165588328 is an abundant number, since it is smaller than the sum of its proper divisors (80449259672).

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

78165588328 is a wasteful number, since it uses less digits than its factorization.

78165588328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210 (or 10206 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 61.

The spelling of 78165588328 in words is "seventy-eight billion, one hundred sixty-five million, five hundred eighty-eight thousand, three hundred twenty-eight".