72807321432 has 32 divisors (see below), whose sum is σ = 187889863680. Its totient is φ = 23486232480.

The previous prime is 72807321373. The next prime is 72807321451. The reversal of 72807321432 is 23412370827.

It is a congruent number.

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, 48928908 + ... + 48930395.

It is an arithmetic number, because the mean of its divisors is an integer number (5871558240).

Almost surely, 2^72807321432 is an apocalyptic number.

It is an amenable number.

72807321432 is an abundant number, since it is smaller than the sum of its proper divisors (115082542248).

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

72807321432 is a wasteful number, since it uses less digits than its factorization.

72807321432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97859343 (or 97859339 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 72807321432 in words is "seventy-two billion, eight hundred seven million, three hundred twenty-one thousand, four hundred thirty-two".