2638708588631 has 2 divisors, whose sum is σ = 2638708588632. Its totient is φ = 2638708588630.

The previous prime is 2638708588609. The next prime is 2638708588651. The reversal of 2638708588631 is 1368858078362.

2638708588631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2638708588631 - 2⁶ = 2638708588567 is a prime.

It is a super-2 number, since 2×2638708588631² (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 (2638708588601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319354294315 + 1319354294316.

It is an arithmetic number, because the mean of its divisors is an integer number (1319354294316).

Almost surely, 2^{2638708588631} is an apocalyptic number.

2638708588631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638708588631 is an equidigital number, since it uses as much as digits as its factorization.

2638708588631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 2638708588631 in words is "two trillion, six hundred thirty-eight billion, seven hundred eight million, five hundred eighty-eight thousand, six hundred thirty-one".