78734118764 has 24 divisors (see below), whose sum is σ = 157476322080. Its totient is φ = 33741461376.

The previous prime is 78734118739. The next prime is 78734118839. The reversal of 78734118764 is 46781143787.

It is a super-2 number, since 2×78734118764² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589274 + ... + 710430.

It is an arithmetic number, because the mean of its divisors is an integer number (6561513420).

Almost surely, 2^78734118764 is an apocalyptic number.

It is an amenable number.

78734118764 is an abundant number, since it is smaller than the sum of its proper divisors (78742203316).

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

78734118764 is a wasteful number, since it uses less digits than its factorization.

78734118764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144377 (or 144375 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 56.

The spelling of 78734118764 in words is "seventy-eight billion, seven hundred thirty-four million, one hundred eighteen thousand, seven hundred sixty-four".