78155555596 has 24 divisors (see below), whose sum is σ = 137793872160. Its totient is φ = 38785974912.

The previous prime is 78155555593. The next prime is 78155555629. The reversal of 78155555596 is 69555555187.

It is a super-2 number, since 2×78155555596² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78155555593) 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, 5661070 + ... + 5674858.

It is an arithmetic number, because the mean of its divisors is an integer number (5741411340).

Almost surely, 2^78155555596 is an apocalyptic number.

It is an amenable number.

78155555596 is a deficient number, since it is larger than the sum of its proper divisors (59638316564).

78155555596 is a wasteful number, since it uses less digits than its factorization.

78155555596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24273 (or 24271 counting only the distinct ones).

The product of its digits is 47250000, while the sum is 61.

The spelling of 78155555596 in words is "seventy-eight billion, one hundred fifty-five million, five hundred fifty-five thousand, five hundred ninety-six".