630399036961 has 2 divisors, whose sum is σ = 630399036962. Its totient is φ = 630399036960.

The previous prime is 630399036929. The next prime is 630399036991. The reversal of 630399036961 is 169630993036.

It is a happy number.

630399036961 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 can be written as a sum of positive squares in only one way, i.e., 604730190736 + 25668846225 = 777644^2 + 160215^2 .

It is a cyclic number.

It is not a de Polignac number, because 630399036961 - 2⁵ = 630399036929 is a prime.

It is not a weakly prime, because it can be changed into another prime (630399036991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315199518480 + 315199518481.

It is an arithmetic number, because the mean of its divisors is an integer number (315199518481).

Almost surely, 2^630399036961 is an apocalyptic number.

It is an amenable number.

630399036961 is a deficient number, since it is larger than the sum of its proper divisors (1).

630399036961 is an equidigital number, since it uses as much as digits as its factorization.

630399036961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4251528, while the sum is 55.

The spelling of 630399036961 in words is "six hundred thirty billion, three hundred ninety-nine million, thirty-six thousand, nine hundred sixty-one".