641164640315 has 32 divisors (see below), whose sum is σ = 812701209600. Its totient is φ = 484252300800.

The previous prime is 641164640273. The next prime is 641164640357. The reversal of 641164640315 is 513046461146.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (641164640273) and next prime (641164640357).

It is not a de Polignac number, because 641164640315 - 2⁸ = 641164640059 is a prime.

It is a super-2 number, since 2×641164640315² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42011156 + ... + 42026414.

It is an arithmetic number, because the mean of its divisors is an integer number (25396912800).

Almost surely, 2^641164640315 is an apocalyptic number.

641164640315 is a deficient number, since it is larger than the sum of its proper divisors (171536569285).

641164640315 is a wasteful number, since it uses less digits than its factorization.

641164640315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16787.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 641164640315 in words is "six hundred forty-one billion, one hundred sixty-four million, six hundred forty thousand, three hundred fifteen".