632638256863 has 2 divisors, whose sum is σ = 632638256864. Its totient is φ = 632638256862.

The previous prime is 632638256839. The next prime is 632638256891. The reversal of 632638256863 is 368652836236.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-632638256863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 632638256798 and 632638256807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632638259863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316319128431 + 316319128432.

It is an arithmetic number, because the mean of its divisors is an integer number (316319128432).

Almost surely, 2^632638256863 is an apocalyptic number.

632638256863 is a deficient number, since it is larger than the sum of its proper divisors (1).

632638256863 is an equidigital number, since it uses as much as digits as its factorization.

632638256863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44789760, while the sum is 58.

The spelling of 632638256863 in words is "six hundred thirty-two billion, six hundred thirty-eight million, two hundred fifty-six thousand, eight hundred sixty-three".