72217271504 has 40 divisors (see below), whose sum is σ = 159943774848. Its totient is φ = 30943658880.

The previous prime is 72217271479. The next prime is 72217271519. The reversal of 72217271504 is 40517271227.

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, 478109 + ... + 610755.

Almost surely, 2^72217271504 is an apocalyptic number.

It is an amenable number.

72217271504 is an abundant number, since it is smaller than the sum of its proper divisors (87726503344).

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

72217271504 is a wasteful number, since it uses less digits than its factorization.

72217271504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137523 (or 137517 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 38.

The spelling of 72217271504 in words is "seventy-two billion, two hundred seventeen million, two hundred seventy-one thousand, five hundred four".