72918234964 has 12 divisors (see below), whose sum is σ = 127611853600. Its totient is φ = 36457705368.

The previous prime is 72918234931. The next prime is 72918234971. The reversal of 72918234964 is 46943281927.

It is a super-2 number, since 2×72918234964² (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 3 ways as a sum of consecutive naturals, for example, 232254 + ... + 446965.

Almost surely, 2^72918234964 is an apocalyptic number.

It is an amenable number.

72918234964 is a deficient number, since it is larger than the sum of its proper divisors (54693618636).

72918234964 is a wasteful number, since it uses less digits than its factorization.

72918234964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706062 (or 706060 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The spelling of 72918234964 in words is "seventy-two billion, nine hundred eighteen million, two hundred thirty-four thousand, nine hundred sixty-four".