72160811264 has 18 divisors (see below), whose sum is σ = 144039744870. Its totient is φ = 36080405504.

The previous prime is 72160811263. The next prime is 72160811279. The reversal of 72160811264 is 46211806127.

It can be written as a sum of positive squares in only one way, i.e., 40076836864 + 32083974400 = 200192^2 + 179120^2 .

It is not an unprimeable number, because it can be changed into a prime (72160811263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140938829 + ... + 140939340.

Almost surely, 2^72160811264 is an apocalyptic number.

It is an amenable number.

72160811264 is a deficient number, since it is larger than the sum of its proper divisors (71878933606).

72160811264 is an equidigital number, since it uses as much as digits as its factorization.

72160811264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281878185 (or 281878171 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 72160811264 in words is "seventy-two billion, one hundred sixty million, eight hundred eleven thousand, two hundred sixty-four".