316616681489 has 2 divisors, whose sum is σ = 316616681490. Its totient is φ = 316616681488.

The previous prime is 316616681417. The next prime is 316616681497. The reversal of 316616681489 is 984186616613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164588433025 + 152028248464 = 405695^2 + 389908^2 .

It is a cyclic number.

It is not a de Polignac number, because 316616681489 - 2⁸ = 316616681233 is a prime.

It is a super-2 number, since 2×316616681489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (316616681789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158308340744 + 158308340745.

It is an arithmetic number, because the mean of its divisors is an integer number (158308340745).

Almost surely, 2^316616681489 is an apocalyptic number.

It is an amenable number.

316616681489 is a deficient number, since it is larger than the sum of its proper divisors (1).

316616681489 is an equidigital number, since it uses as much as digits as its factorization.

316616681489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 59.

The spelling of 316616681489 in words is "three hundred sixteen billion, six hundred sixteen million, six hundred eighty-one thousand, four hundred eighty-nine".