36515316631 has 2 divisors, whose sum is σ = 36515316632. Its totient is φ = 36515316630.

The previous prime is 36515316619. The next prime is 36515316637. The reversal of 36515316631 is 13661351563.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36515316631 - 2⁹ = 36515316119 is a prime.

It is a super-2 number, since 2×36515316631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36515316637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18257658315 + 18257658316.

It is an arithmetic number, because the mean of its divisors is an integer number (18257658316).

Almost surely, 2^36515316631 is an apocalyptic number.

36515316631 is a deficient number, since it is larger than the sum of its proper divisors (1).

36515316631 is an equidigital number, since it uses as much as digits as its factorization.

36515316631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 40.

The spelling of 36515316631 in words is "thirty-six billion, five hundred fifteen million, three hundred sixteen thousand, six hundred thirty-one".