641663567156413 has 8 divisors (see below), whose sum is σ = 644731012053440. Its totient is φ = 638596371178080.

The previous prime is 641663567156407. The next prime is 641663567156459. The reversal of 641663567156413 is 314651765366146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641663567156413 - 2³⁷ = 641526128202941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641663567106413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57060720 + ... + 67373977.

It is an arithmetic number, because the mean of its divisors is an integer number (80591376506680).

Almost surely, 2^{641663567156413} is an apocalyptic number.

It is an amenable number.

641663567156413 is a deficient number, since it is larger than the sum of its proper divisors (3067444897027).

641663567156413 is a wasteful number, since it uses less digits than its factorization.

641663567156413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124459347.

The product of its digits is 195955200, while the sum is 64.

The spelling of 641663567156413 in words is "six hundred forty-one trillion, six hundred sixty-three billion, five hundred sixty-seven million, one hundred fifty-six thousand, four hundred thirteen".