631473478808 has 16 divisors (see below), whose sum is σ = 1196219091480. Its totient is φ = 312481721088.

The previous prime is 631473478781. The next prime is 631473478817. The reversal of 631473478808 is 808874374136.

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, 406876466 + ... + 406878017.

Almost surely, 2^631473478808 is an apocalyptic number.

It is an amenable number.

631473478808 is a deficient number, since it is larger than the sum of its proper divisors (564745612672).

631473478808 is a wasteful number, since it uses less digits than its factorization.

631473478808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813754586 (or 813754582 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 59.

The spelling of 631473478808 in words is "six hundred thirty-one billion, four hundred seventy-three million, four hundred seventy-eight thousand, eight hundred eight".