72216578800 has 60 divisors (see below), whose sum is σ = 173566263816. Its totient is φ = 28875654400.

The previous prime is 72216578783. The next prime is 72216578807. The reversal of 72216578800 is 887561227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72216578807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1063467 + ... + 1129333.

Almost surely, 2^72216578800 is an apocalyptic number.

It is an amenable number.

72216578800 is an abundant number, since it is smaller than the sum of its proper divisors (101349685016).

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

72216578800 is a wasteful number, since it uses less digits than its factorization.

72216578800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68626 (or 68615 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 72216578800 in words is "seventy-two billion, two hundred sixteen million, five hundred seventy-eight thousand, eight hundred".