316564808563 has 4 divisors (see below), whose sum is σ = 321289656520. Its totient is φ = 311839960608.

The previous prime is 316564808543. The next prime is 316564808603. The reversal of 316564808563 is 365808465613.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316564808563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316564808543) 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, 2362423878 + ... + 2362424011.

It is an arithmetic number, because the mean of its divisors is an integer number (80322414130).

Almost surely, 2^316564808563 is an apocalyptic number.

316564808563 is a deficient number, since it is larger than the sum of its proper divisors (4724847957).

316564808563 is an equidigital number, since it uses as much as digits as its factorization.

316564808563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724847956.

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 316564808563 in words is "three hundred sixteen billion, five hundred sixty-four million, eight hundred eight thousand, five hundred sixty-three".