316559926391 has 4 divisors (see below), whose sum is σ = 317204651784. Its totient is φ = 315915201000.

The previous prime is 316559926349. The next prime is 316559926393. The reversal of 316559926391 is 193629955613.

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

It is a cyclic number.

It is not a de Polignac number, because 316559926391 - 2³⁰ = 315486184567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 316559926391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316559926393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322361960 + ... + 322362941.

It is an arithmetic number, because the mean of its divisors is an integer number (79301162946).

Almost surely, 2^316559926391 is an apocalyptic number.

316559926391 is a deficient number, since it is larger than the sum of its proper divisors (644725393).

316559926391 is an equidigital number, since it uses as much as digits as its factorization.

316559926391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644725392.

The product of its digits is 11809800, while the sum is 59.

The spelling of 316559926391 in words is "three hundred sixteen billion, five hundred fifty-nine million, nine hundred twenty-six thousand, three hundred ninety-one".