631443765012 has 48 divisors (see below), whose sum is σ = 1476068244672. Its totient is φ = 210095907840.

The previous prime is 631443764929. The next prime is 631443765019. The reversal of 631443765012 is 210567344136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631443765019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18887103 + ... + 18920505.

It is an arithmetic number, because the mean of its divisors is an integer number (30751421764).

Almost surely, 2^631443765012 is an apocalyptic number.

It is an amenable number.

631443765012 is an abundant number, since it is smaller than the sum of its proper divisors (844624479660).

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

631443765012 is a wasteful number, since it uses less digits than its factorization.

631443765012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36248 (or 36246 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 631443765012 in words is "six hundred thirty-one billion, four hundred forty-three million, seven hundred sixty-five thousand, twelve".