72794449631 has 2 divisors, whose sum is σ = 72794449632. Its totient is φ = 72794449630.

The previous prime is 72794449601. The next prime is 72794449733. The reversal of 72794449631 is 13694449727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72794449631 - 2¹⁰ = 72794448607 is a prime.

It is a super-2 number, since 2×72794449631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72794449601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36397224815 + 36397224816.

It is an arithmetic number, because the mean of its divisors is an integer number (36397224816).

Almost surely, 2^72794449631 is an apocalyptic number.

72794449631 is a deficient number, since it is larger than the sum of its proper divisors (1).

72794449631 is an equidigital number, since it uses as much as digits as its factorization.

72794449631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 56.

The spelling of 72794449631 in words is "seventy-two billion, seven hundred ninety-four million, four hundred forty-nine thousand, six hundred thirty-one".