72917900727 has 12 divisors (see below), whose sum is σ = 113097152376. Its totient is φ = 41667371760.

The previous prime is 72917900687. The next prime is 72917900779. The reversal of 72917900727 is 72700971927.

It is a happy number.

It is not a de Polignac number, because 72917900727 - 2¹⁸ = 72917638583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72917900727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72917900927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248019924 + ... + 248020217.

It is an arithmetic number, because the mean of its divisors is an integer number (9424762698).

Almost surely, 2^72917900727 is an apocalyptic number.

72917900727 is a deficient number, since it is larger than the sum of its proper divisors (40179251649).

72917900727 is a wasteful number, since it uses less digits than its factorization.

72917900727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496040158 (or 496040151 counting only the distinct ones).

The product of its (nonzero) digits is 777924, while the sum is 51.

The spelling of 72917900727 in words is "seventy-two billion, nine hundred seventeen million, nine hundred thousand, seven hundred twenty-seven".