631694737379 has 16 divisors (see below), whose sum is σ = 690082848000. Its totient is φ = 575953449120.

The previous prime is 631694737369. The next prime is 631694737381. The reversal of 631694737379 is 973737496136.

It is a cyclic number.

It is not a de Polignac number, because 631694737379 - 2⁸ = 631694737123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631694737319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1671809 + ... + 2014530.

It is an arithmetic number, because the mean of its divisors is an integer number (43130178000).

Almost surely, 2^631694737379 is an apocalyptic number.

631694737379 is a deficient number, since it is larger than the sum of its proper divisors (58388110621).

631694737379 is a wasteful number, since it uses less digits than its factorization.

631694737379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686698.

The product of its digits is 108020304, while the sum is 65.

The spelling of 631694737379 in words is "six hundred thirty-one billion, six hundred ninety-four million, seven hundred thirty-seven thousand, three hundred seventy-nine".