631770428768368 has 10 divisors (see below), whose sum is σ = 1224055205738744. Its totient is φ = 315885214384176.

The previous prime is 631770428768299. The next prime is 631770428768377. The reversal of 631770428768368 is 863867824077136.

It is a junction number, because it is equal to n+sod(n) for n = 631770428768294 and 631770428768303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19742825898996 + ... + 19742825899027.

Almost surely, 2^{631770428768368} is an apocalyptic number.

It is an amenable number.

631770428768368 is a deficient number, since it is larger than the sum of its proper divisors (592284776970376).

631770428768368 is a wasteful number, since it uses less digits than its factorization.

631770428768368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39485651798031 (or 39485651798025 counting only the distinct ones).

The product of its (nonzero) digits is 2731180032, while the sum is 76.

The spelling of 631770428768368 in words is "six hundred thirty-one trillion, seven hundred seventy billion, four hundred twenty-eight million, seven hundred sixty-eight thousand, three hundred sixty-eight".