6401631336504 has 16 divisors (see below), whose sum is σ = 16004078341320. Its totient is φ = 2133877112160.

The previous prime is 6401631336493. The next prime is 6401631336599. The reversal of 6401631336504 is 4056331361046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133367319487 + ... + 133367319534.

Almost surely, 2^{6401631336504} is an apocalyptic number.

It is an amenable number.

6401631336504 is an abundant number, since it is smaller than the sum of its proper divisors (9602447004816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6401631336504 is a wasteful number, since it uses less digits than its factorization.

6401631336504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266734639030 (or 266734639026 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 6401631336504 in words is "six trillion, four hundred one billion, six hundred thirty-one million, three hundred thirty-six thousand, five hundred four".