72504527831 has 2 divisors, whose sum is σ = 72504527832. Its totient is φ = 72504527830.

The previous prime is 72504527773. The next prime is 72504527861. The reversal of 72504527831 is 13872540527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72504527831 is a prime.

It is a super-2 number, since 2×72504527831² (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 (72504527861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36252263915 + 36252263916.

It is an arithmetic number, because the mean of its divisors is an integer number (36252263916).

Almost surely, 2^72504527831 is an apocalyptic number.

72504527831 is a deficient number, since it is larger than the sum of its proper divisors (1).

72504527831 is an equidigital number, since it uses as much as digits as its factorization.

72504527831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 72504527831 in words is "seventy-two billion, five hundred four million, five hundred twenty-seven thousand, eight hundred thirty-one".