78345309304 has 32 divisors (see below), whose sum is σ = 152777419200. Its totient is φ = 37631468160.

The previous prime is 78345309293. The next prime is 78345309337. The reversal of 78345309304 is 40390354387.

It is a super-2 number, since 2×78345309304² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1651807 + ... + 1698574.

It is an arithmetic number, because the mean of its divisors is an integer number (4774294350).

Almost surely, 2^78345309304 is an apocalyptic number.

78345309304 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

78345309304 is a deficient number, since it is larger than the sum of its proper divisors (74432109896).

78345309304 is a wasteful number, since it uses less digits than its factorization.

78345309304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350503 (or 3350499 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 78345309304 in words is "seventy-eight billion, three hundred forty-five million, three hundred nine thousand, three hundred four".