641630944317 has 48 divisors (see below), whose sum is σ = 992262821760. Its totient is φ = 367780216320.

The previous prime is 641630944303. The next prime is 641630944379. The reversal of 641630944317 is 713449036146.

It is not a de Polignac number, because 641630944317 - 2²⁶ = 641563835453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641630944117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 311313 + ... + 1174809.

It is an arithmetic number, because the mean of its divisors is an integer number (20672142120).

Almost surely, 2^641630944317 is an apocalyptic number.

It is an amenable number.

641630944317 is a deficient number, since it is larger than the sum of its proper divisors (350631877443).

641630944317 is a wasteful number, since it uses less digits than its factorization.

641630944317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863634 (or 863623 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 641630944317 in words is "six hundred forty-one billion, six hundred thirty million, nine hundred forty-four thousand, three hundred seventeen".