72923499791 has 16 divisors (see below), whose sum is σ = 75463046400. Its totient is φ = 70395920640.

The previous prime is 72923499787. The next prime is 72923499793. The reversal of 72923499791 is 19799432927.

It is a cyclic number.

It is not a de Polignac number, because 72923499791 - 2² = 72923499787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72923499793) 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, 28517885 + ... + 28520441.

It is an arithmetic number, because the mean of its divisors is an integer number (4716440400).

Almost surely, 2^72923499791 is an apocalyptic number.

72923499791 is a deficient number, since it is larger than the sum of its proper divisors (2539546609).

72923499791 is a wasteful number, since it uses less digits than its factorization.

72923499791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514.

The product of its digits is 15431472, while the sum is 62.

The spelling of 72923499791 in words is "seventy-two billion, nine hundred twenty-three million, four hundred ninety-nine thousand, seven hundred ninety-one".