641514717165 has 24 divisors (see below), whose sum is σ = 1194002903520. Its totient is φ = 293263870368.

The previous prime is 641514717149. The next prime is 641514717187. The reversal of 641514717165 is 561717415146.

It is not a de Polignac number, because 641514717165 - 2⁴ = 641514717149 is a prime.

It is a super-2 number, since 2×641514717165² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436403835 + ... + 436405304.

It is an arithmetic number, because the mean of its divisors is an integer number (49750120980).

Almost surely, 2^641514717165 is an apocalyptic number.

It is an amenable number.

641514717165 is a deficient number, since it is larger than the sum of its proper divisors (552488186355).

641514717165 is a wasteful number, since it uses less digits than its factorization.

641514717165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872809161 (or 872809154 counting only the distinct ones).

The product of its digits is 705600, while the sum is 48.

The spelling of 641514717165 in words is "six hundred forty-one billion, five hundred fourteen million, seven hundred seventeen thousand, one hundred sixty-five".