316616788493 has 2 divisors, whose sum is σ = 316616788494. Its totient is φ = 316616788492.

The previous prime is 316616788489. The next prime is 316616788673. The reversal of 316616788493 is 394887616613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287143796164 + 29472992329 = 535858^2 + 171677^2 .

It is a cyclic number.

It is not a de Polignac number, because 316616788493 - 2² = 316616788489 is a prime.

It is a super-2 number, since 2×316616788493² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316616718493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158308394246 + 158308394247.

It is an arithmetic number, because the mean of its divisors is an integer number (158308394247).

Almost surely, 2^316616788493 is an apocalyptic number.

It is an amenable number.

316616788493 is a deficient number, since it is larger than the sum of its proper divisors (1).

316616788493 is an equidigital number, since it uses as much as digits as its factorization.

316616788493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 62.

The spelling of 316616788493 in words is "three hundred sixteen billion, six hundred sixteen million, seven hundred eighty-eight thousand, four hundred ninety-three".