631620263454 has 8 divisors (see below), whose sum is σ = 1263240526920. Its totient is φ = 210540087816.

The previous prime is 631620263419. The next prime is 631620263503. The reversal of 631620263454 is 454362026136.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

631620263454 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52635021949 + ... + 52635021960.

It is an arithmetic number, because the mean of its divisors is an integer number (157905065865).

Almost surely, 2^631620263454 is an apocalyptic number.

631620263454 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.

631620263454 is a wasteful number, since it uses less digits than its factorization.

631620263454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105270043914.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 631620263454 in words is "six hundred thirty-one billion, six hundred twenty million, two hundred sixty-three thousand, four hundred fifty-four".