641565130045361 has 8 divisors (see below), whose sum is σ = 644138607480480. Its totient is φ = 638996615924128.

The previous prime is 641565130045351. The next prime is 641565130045363. The reversal of 641565130045361 is 163540031565146.

It is a happy number.

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 641565130045361 - 2³⁰ = 641564056303537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641565130045363) 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, 1240569431 + ... + 1241086476.

It is an arithmetic number, because the mean of its divisors is an integer number (80517325935060).

Almost surely, 2^{641565130045361} is an apocalyptic number.

It is an amenable number.

641565130045361 is a deficient number, since it is larger than the sum of its proper divisors (2573477435119).

641565130045361 is a wasteful number, since it uses less digits than its factorization.

641565130045361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481656943.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 641565130045361 in words is "six hundred forty-one trillion, five hundred sixty-five billion, one hundred thirty million, forty-five thousand, three hundred sixty-one".