631794893954905 has 16 divisors (see below), whose sum is σ = 758848906819584. Its totient is φ = 504972601187200.

The previous prime is 631794893954893. The next prime is 631794893954981. The reversal of 631794893954905 is 509459398497136.

It is not a de Polignac number, because 631794893954905 - 2³⁹ = 631245138141017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118023597 + ... + 123260533.

It is an arithmetic number, because the mean of its divisors is an integer number (47428056676224).

Almost surely, 2^{631794893954905} is an apocalyptic number.

It is an amenable number.

631794893954905 is a deficient number, since it is larger than the sum of its proper divisors (127054012864679).

631794893954905 is a wasteful number, since it uses less digits than its factorization.

631794893954905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259056.

The product of its (nonzero) digits is 7936185600, while the sum is 82.

The spelling of 631794893954905 in words is "six hundred thirty-one trillion, seven hundred ninety-four billion, eight hundred ninety-three million, nine hundred fifty-four thousand, nine hundred five".