316558916491 has 4 divisors (see below), whose sum is σ = 316567537552. Its totient is φ = 316550295432.

The previous prime is 316558916489. The next prime is 316558916537. The reversal of 316558916491 is 194619855613.

It is a happy number.

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 316558916491 - 2¹ = 316558916489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316558916431) 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, 4255215 + ... + 4328968.

It is an arithmetic number, because the mean of its divisors is an integer number (79141884388).

Almost surely, 2^316558916491 is an apocalyptic number.

316558916491 is a deficient number, since it is larger than the sum of its proper divisors (8621061).

316558916491 is an equidigital number, since it uses as much as digits as its factorization.

316558916491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8621060.

The product of its digits is 6998400, while the sum is 58.

The spelling of 316558916491 in words is "three hundred sixteen billion, five hundred fifty-eight million, nine hundred sixteen thousand, four hundred ninety-one".