631632516006664 has 8 divisors (see below), whose sum is σ = 1184310967512510. Its totient is φ = 315816258003328.

The previous prime is 631632516006647. The next prime is 631632516006691. The reversal of 631632516006664 is 466600615236136.

It can be written as a sum of positive squares in only one way, i.e., 626603126689764 + 5029389316900 = 25032042^2 + 2242630^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39477032250409 + ... + 39477032250424.

Almost surely, 2^{631632516006664} is an apocalyptic number.

It is an amenable number.

631632516006664 is a deficient number, since it is larger than the sum of its proper divisors (552678451505846).

631632516006664 is a wasteful number, since it uses less digits than its factorization.

631632516006664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78954064500839 (or 78954064500835 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 55.

The spelling of 631632516006664 in words is "six hundred thirty-one trillion, six hundred thirty-two billion, five hundred sixteen million, six thousand, six hundred sixty-four".