72794451239 has 4 divisors (see below), whose sum is σ = 75304604760. Its totient is φ = 70284297720.

The previous prime is 72794451211. The next prime is 72794451253. The reversal of 72794451239 is 93215449727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72794451239 - 2²⁰ = 72793402663 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 (72794451209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255076717 + ... + 1255076774.

It is an arithmetic number, because the mean of its divisors is an integer number (18826151190).

Almost surely, 2^72794451239 is an apocalyptic number.

72794451239 is a deficient number, since it is larger than the sum of its proper divisors (2510153521).

72794451239 is a wasteful number, since it uses less digits than its factorization.

72794451239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510153520.

The product of its digits is 3810240, while the sum is 53.

The spelling of 72794451239 in words is "seventy-two billion, seven hundred ninety-four million, four hundred fifty-one thousand, two hundred thirty-nine".