72732217202 has 6 divisors (see below), whose sum is σ = 109098897903. Its totient is φ = 36365917902.

The previous prime is 72732217177. The next prime is 72732217351. The reversal of 72732217202 is 20271223727.

It can be written as a sum of positive squares in only one way, i.e., 36366108601 + 36366108601 = 190699^2 + 190699^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=190699.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 286049 + ... + 476747.

Almost surely, 2^72732217202 is an apocalyptic number.

72732217202 is a deficient number, since it is larger than the sum of its proper divisors (36366680701).

72732217202 is an frugal number, since it uses more digits than its factorization.

72732217202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381400 (or 190701 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 35.

The spelling of 72732217202 in words is "seventy-two billion, seven hundred thirty-two million, two hundred seventeen thousand, two hundred two".