631771858616 has 16 divisors (see below), whose sum is σ = 1225419553800. Its totient is φ = 304993310944.

The previous prime is 631771858609. The next prime is 631771858667. The reversal of 631771858616 is 616858177136.

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, 1361577050 + ... + 1361577513.

Almost surely, 2^631771858616 is an apocalyptic number.

It is an amenable number.

631771858616 is a deficient number, since it is larger than the sum of its proper divisors (593647695184).

631771858616 is a wasteful number, since it uses less digits than its factorization.

631771858616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723154598 (or 2723154594 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 59.

The spelling of 631771858616 in words is "six hundred thirty-one billion, seven hundred seventy-one million, eight hundred fifty-eight thousand, six hundred sixteen".