641539314817 has 8 divisors (see below), whose sum is σ = 668423238912. Its totient is φ = 615042210000.

The previous prime is 641539314809. The next prime is 641539314821. The reversal of 641539314817 is 718413935146.

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 641539314817 - 2³ = 641539314809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641539314887) 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, 96701434 + ... + 96708067.

It is an arithmetic number, because the mean of its divisors is an integer number (83552904864).

Almost surely, 2^641539314817 is an apocalyptic number.

It is an amenable number.

641539314817 is a deficient number, since it is larger than the sum of its proper divisors (26883924095).

641539314817 is a wasteful number, since it uses less digits than its factorization.

641539314817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193409639.

The product of its digits is 2177280, while the sum is 52.

The spelling of 641539314817 in words is "six hundred forty-one billion, five hundred thirty-nine million, three hundred fourteen thousand, eight hundred seventeen".