72904722715 has 16 divisors (see below), whose sum is σ = 95534707680. Its totient is φ = 52968395520.

The previous prime is 72904722713. The next prime is 72904722721. The reversal of 72904722715 is 51722740927.

It is not a de Polignac number, because 72904722715 - 2¹ = 72904722713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72904722713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609930 + ... + 719599.

It is an arithmetic number, because the mean of its divisors is an integer number (5970919230).

Almost surely, 2^72904722715 is an apocalyptic number.

72904722715 is a deficient number, since it is larger than the sum of its proper divisors (22629984965).

72904722715 is a wasteful number, since it uses less digits than its factorization.

72904722715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330542.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 72904722715 in words is "seventy-two billion, nine hundred four million, seven hundred twenty-two thousand, seven hundred fifteen".