500640891313 has 4 divisors (see below), whose sum is σ = 501983092468. Its totient is φ = 499298690160.

The previous prime is 500640891307. The next prime is 500640891341. The reversal of 500640891313 is 313198046005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 418055351184 + 82585540129 = 646572^2 + 287377^2 .

It is a cyclic number.

It is not a de Polignac number, because 500640891313 - 2²⁵ = 500607336881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500640891613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671100018 + ... + 671100763.

It is an arithmetic number, because the mean of its divisors is an integer number (125495773117).

Almost surely, 2^500640891313 is an apocalyptic number.

It is an amenable number.

500640891313 is a deficient number, since it is larger than the sum of its proper divisors (1342201155).

500640891313 is a wasteful number, since it uses less digits than its factorization.

500640891313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342201154.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 500640891313 in words is "five hundred billion, six hundred forty million, eight hundred ninety-one thousand, three hundred thirteen".