632638256875 has 10 divisors (see below), whose sum is σ = 790544766572. Its totient is φ = 506110605000.

The previous prime is 632638256863. The next prime is 632638256891. The reversal of 632638256875 is 578652836236.

It is not a de Polignac number, because 632638256875 - 2¹⁷ = 632638125803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 506109981 + ... + 506111230.

Almost surely, 2^632638256875 is an apocalyptic number.

632638256875 is a deficient number, since it is larger than the sum of its proper divisors (157906509697).

632638256875 is an equidigital number, since it uses as much as digits as its factorization.

632638256875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012221231 (or 1012221216 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 61.

The spelling of 632638256875 in words is "six hundred thirty-two billion, six hundred thirty-eight million, two hundred fifty-six thousand, eight hundred seventy-five".