631944674000 has 80 divisors (see below), whose sum is σ = 1608465593280. Its totient is φ = 239473756800.

The previous prime is 631944673961. The next prime is 631944674003. The reversal of 631944674000 is 476449136.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631944674003) 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, 8277062 + ... + 8353061.

It is an arithmetic number, because the mean of its divisors is an integer number (20105819916).

Almost surely, 2^631944674000 is an apocalyptic number.

It is an amenable number.

631944674000 is an abundant number, since it is smaller than the sum of its proper divisors (976520919280).

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

631944674000 is a wasteful number, since it uses less digits than its factorization.

631944674000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16630165 (or 16630149 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 631944674000 in words is "six hundred thirty-one billion, nine hundred forty-four million, six hundred seventy-four thousand".