631475574136 has 64 divisors (see below), whose sum is σ = 1373767879680. Its totient is φ = 268938401280.

The previous prime is 631475574091. The next prime is 631475574139.

631475574136 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×631475574136² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631475574139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612826 + ... + 1280041.

It is an arithmetic number, because the mean of its divisors is an integer number (21465123120).

Almost surely, 2^631475574136 is an apocalyptic number.

It is an amenable number.

631475574136 is an abundant number, since it is smaller than the sum of its proper divisors (742292305544).

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

631475574136 is a wasteful number, since it uses less digits than its factorization.

631475574136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893124 (or 1893120 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 52.

The spelling of 631475574136 in words is "six hundred thirty-one billion, four hundred seventy-five million, five hundred seventy-four thousand, one hundred thirty-six".