631712929990 has 16 divisors (see below), whose sum is σ = 1137094997040. Its totient is φ = 252682566880.

The previous prime is 631712929987. The next prime is 631712930027. The reversal of 631712929990 is 99929217136.

It is a super-2 number, since 2×631712929990² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919545 + ... + 1452235.

It is an arithmetic number, because the mean of its divisors is an integer number (71068437315).

Almost surely, 2^631712929990 is an apocalyptic number.

631712929990 is a deficient number, since it is larger than the sum of its proper divisors (505382067050).

631712929990 is a wasteful number, since it uses less digits than its factorization.

631712929990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651287.

The product of its (nonzero) digits is 3306744, while the sum is 58.

The spelling of 631712929990 in words is "six hundred thirty-one billion, seven hundred twelve million, nine hundred twenty-nine thousand, nine hundred ninety".