2531639015791 has 2 divisors, whose sum is σ = 2531639015792. Its totient is φ = 2531639015790.

The previous prime is 2531639015783. The next prime is 2531639015827. The reversal of 2531639015791 is 1975109361352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2531639015791 - 2³ = 2531639015783 is a prime.

It is a super-2 number, since 2×2531639015791² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531639315791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265819507895 + 1265819507896.

It is an arithmetic number, because the mean of its divisors is an integer number (1265819507896).

Almost surely, 2^{2531639015791} is an apocalyptic number.

2531639015791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531639015791 is an equidigital number, since it uses as much as digits as its factorization.

2531639015791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 52.

The spelling of 2531639015791 in words is "two trillion, five hundred thirty-one billion, six hundred thirty-nine million, fifteen thousand, seven hundred ninety-one".