72220070880 has 96 divisors (see below), whose sum is σ = 252770263200. Its totient is φ = 19258684416.

The previous prime is 72220070849. The next prime is 72220070903. The reversal of 72220070880 is 8807002227.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8354485 + ... + 8363124.

It is an arithmetic number, because the mean of its divisors is an integer number (2633023575).

Almost surely, 2^72220070880 is an apocalyptic number.

It is an amenable number.

72220070880 is an abundant number, since it is smaller than the sum of its proper divisors (180550192320).

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

72220070880 is a wasteful number, since it uses less digits than its factorization.

72220070880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16717633 (or 16717619 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The spelling of 72220070880 in words is "seventy-two billion, two hundred twenty million, seventy thousand, eight hundred eighty".