631712929993 has 24 divisors (see below), whose sum is σ = 672322670592. Its totient is φ = 593432687232.

The previous prime is 631712929987. The next prime is 631712930027. The reversal of 631712929993 is 399929217136.

It is a de Polignac number, because none of the positive numbers 2^k-631712929993 is a prime.

It is a super-2 number, since 2×631712929993² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631712929933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169494496 + ... + 169498222.

It is an arithmetic number, because the mean of its divisors is an integer number (28013444608).

Almost surely, 2^631712929993 is an apocalyptic number.

It is an amenable number.

631712929993 is a deficient number, since it is larger than the sum of its proper divisors (40609740599).

631712929993 is a wasteful number, since it uses less digits than its factorization.

631712929993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7589 (or 7570 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 61.

The spelling of 631712929993 in words is "six hundred thirty-one billion, seven hundred twelve million, nine hundred twenty-nine thousand, nine hundred ninety-three".