641264433304167 has 20 divisors (see below), whose sum is σ = 957938944289976. Its totient is φ = 427509302325840.

The previous prime is 641264433304093. The next prime is 641264433304199. The reversal of 641264433304167 is 761403334462146.

641264433304167 is a `hidden beast` number, since 6 + 4 + 1 + 2 + 6 + 443 + 3 + 30 + 4 + 167 = 666.

It is not a de Polignac number, because 641264433304167 - 2⁴⁰ = 640164921676391 is a prime.

It is a super-2 number, since 2×641264433304167² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641264433304567) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 163042348 + ... + 166929134.

Almost surely, 2^{641264433304167} is an apocalyptic number.

641264433304167 is a deficient number, since it is larger than the sum of its proper divisors (316674510985809).

641264433304167 is a wasteful number, since it uses less digits than its factorization.

641264433304167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5923660 (or 5923651 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 54.

The spelling of 641264433304167 in words is "six hundred forty-one trillion, two hundred sixty-four billion, four hundred thirty-three million, three hundred four thousand, one hundred sixty-seven".