78942764324 has 24 divisors (see below), whose sum is σ = 139117321728. Its totient is φ = 39195727200.

The previous prime is 78942764311. The next prime is 78942764339. The reversal of 78942764324 is 42346724987.

It is a super-2 number, since 2×78942764324² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78942764324.

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, 316349 + ... + 507899.

It is an arithmetic number, because the mean of its divisors is an integer number (5796555072).

Almost surely, 2^78942764324 is an apocalyptic number.

It is an amenable number.

78942764324 is a deficient number, since it is larger than the sum of its proper divisors (60174557404).

78942764324 is a wasteful number, since it uses less digits than its factorization.

78942764324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192275 (or 192273 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 56.

The spelling of 78942764324 in words is "seventy-eight billion, nine hundred forty-two million, seven hundred sixty-four thousand, three hundred twenty-four".