72856074231 has 12 divisors (see below), whose sum is σ = 106807247352. Its totient is φ = 47845779696.

The previous prime is 72856074227. The next prime is 72856074257. The reversal of 72856074231 is 13247065827.

72856074231 is a `hidden beast` number, since 7 + 2 + 8 + 5 + 607 + 4 + 2 + 31 = 666.

It is not a de Polignac number, because 72856074231 - 2² = 72856074227 is a prime.

It is a super-2 number, since 2×72856074231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72856073231) 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, 60410736 + ... + 60411941.

It is an arithmetic number, because the mean of its divisors is an integer number (8900603946).

Almost surely, 2^72856074231 is an apocalyptic number.

72856074231 is a deficient number, since it is larger than the sum of its proper divisors (33951173121).

72856074231 is a wasteful number, since it uses less digits than its factorization.

72856074231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120822750 (or 120822747 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 72856074231 in words is "seventy-two billion, eight hundred fifty-six million, seventy-four thousand, two hundred thirty-one".