631977451084 has 12 divisors (see below), whose sum is σ = 1263954902224. Its totient is φ = 270847479024.

The previous prime is 631977451081. The next prime is 631977451099. The reversal of 631977451084 is 480154779136.

631977451084 is an admirable number.

It is a super-2 number, since 2×631977451084² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631977451081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11285311599 + ... + 11285311654.

Almost surely, 2^631977451084 is an apocalyptic number.

It is an amenable number.

631977451084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631977451084 is a wasteful number, since it uses less digits than its factorization.

631977451084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22570623264 (or 22570623262 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 631977451084 in words is "six hundred thirty-one billion, nine hundred seventy-seven million, four hundred fifty-one thousand, eighty-four".