17115620939 has 2 divisors, whose sum is σ = 17115620940. Its totient is φ = 17115620938.

The previous prime is 17115620887. The next prime is 17115620941. The reversal of 17115620939 is 93902651171.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17115620939 is a prime.

Together with 17115620941, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17115620939.

It is not a weakly prime, because it can be changed into another prime (17115620999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8557810469 + 8557810470.

It is an arithmetic number, because the mean of its divisors is an integer number (8557810470).

Almost surely, 2^17115620939 is an apocalyptic number.

17115620939 is a deficient number, since it is larger than the sum of its proper divisors (1).

17115620939 is an equidigital number, since it uses as much as digits as its factorization.

17115620939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The spelling of 17115620939 in words is "seventeen billion, one hundred fifteen million, six hundred twenty thousand, nine hundred thirty-nine".