32640508631 has 2 divisors, whose sum is σ = 32640508632. Its totient is φ = 32640508630.

The previous prime is 32640508613. The next prime is 32640508651. The reversal of 32640508631 is 13680504623.

Together with previous prime (32640508613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32640508631 is a prime.

It is a super-2 number, since 2×32640508631² (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 (32640508601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16320254315 + 16320254316.

It is an arithmetic number, because the mean of its divisors is an integer number (16320254316).

Almost surely, 2^32640508631 is an apocalyptic number.

32640508631 is a deficient number, since it is larger than the sum of its proper divisors (1).

32640508631 is an equidigital number, since it uses as much as digits as its factorization.

32640508631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 32640508631 in words is "thirty-two billion, six hundred forty million, five hundred eight thousand, six hundred thirty-one".