17312977139 has 2 divisors, whose sum is σ = 17312977140. Its totient is φ = 17312977138.

The previous prime is 17312977109. The next prime is 17312977147. The reversal of 17312977139 is 93177921371.

It is a strong prime.

It is an emirp because it is prime and its reverse (93177921371) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17312977139 is a prime.

It is not a weakly prime, because it can be changed into another prime (17312977109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8656488569 + 8656488570.

It is an arithmetic number, because the mean of its divisors is an integer number (8656488570).

Almost surely, 2^17312977139 is an apocalyptic number.

17312977139 is a deficient number, since it is larger than the sum of its proper divisors (1).

17312977139 is an equidigital number, since it uses as much as digits as its factorization.

17312977139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094, while the sum is 50.

The spelling of 17312977139 in words is "seventeen billion, three hundred twelve million, nine hundred seventy-seven thousand, one hundred thirty-nine".