631643412365 has 48 divisors (see below), whose sum is σ = 934619088384. Its totient is φ = 407198937600.

The previous prime is 631643412347. The next prime is 631643412371. The reversal of 631643412365 is 563214346136.

It is not a de Polignac number, because 631643412365 - 2²² = 631639218061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3711080 + ... + 3877550.

It is an arithmetic number, because the mean of its divisors is an integer number (19471231008).

Almost surely, 2^631643412365 is an apocalyptic number.

It is an amenable number.

631643412365 is a deficient number, since it is larger than the sum of its proper divisors (302975676019).

631643412365 is a wasteful number, since it uses less digits than its factorization.

631643412365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167418 (or 167411 counting only the distinct ones).

The product of its digits is 933120, while the sum is 44.

The spelling of 631643412365 in words is "six hundred thirty-one billion, six hundred forty-three million, four hundred twelve thousand, three hundred sixty-five".