72707426233 has 12 divisors (see below), whose sum is σ = 78834122748. Its totient is φ = 67026236160.

The previous prime is 72707426227. The next prime is 72707426321. The reversal of 72707426233 is 33262470727.

It can be written as a sum of positive squares in 6 ways, for example, as 23264790784 + 49442635449 = 152528^2 + 222357^2 .

It is not a de Polignac number, because 72707426233 - 2²⁹ = 72170555321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72707426233.

It is not an unprimeable number, because it can be changed into a prime (72707426333) 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, 154060 + ... + 411277.

It is an arithmetic number, because the mean of its divisors is an integer number (6569510229).

Almost surely, 2^72707426233 is an apocalyptic number.

It is an amenable number.

72707426233 is a deficient number, since it is larger than the sum of its proper divisors (6126696515).

72707426233 is a wasteful number, since it uses less digits than its factorization.

72707426233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566124 (or 566111 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 43.

The spelling of 72707426233 in words is "seventy-two billion, seven hundred seven million, four hundred twenty-six thousand, two hundred thirty-three".