72209593128 has 32 divisors (see below), whose sum is σ = 180564219360. Its totient is φ = 24064499520.

The previous prime is 72209593037. The next prime is 72209593147. The reversal of 72209593128 is 82139590227.

It is a super-2 number, since 2×72209593128² (a number of 23 digits) contains 22 as substring.

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, 224638 + ... + 441453.

It is an arithmetic number, because the mean of its divisors is an integer number (5642631855).

Almost surely, 2^72209593128 is an apocalyptic number.

It is an amenable number.

72209593128 is an abundant number, since it is smaller than the sum of its proper divisors (108354626232).

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

72209593128 is a wasteful number, since it uses less digits than its factorization.

72209593128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670617 (or 670613 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 72209593128 in words is "seventy-two billion, two hundred nine million, five hundred ninety-three thousand, one hundred twenty-eight".