17708970779 has 2 divisors, whose sum is σ = 17708970780. Its totient is φ = 17708970778.

The previous prime is 17708970743. The next prime is 17708970781. The reversal of 17708970779 is 97707980771.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17708970779 - 2³² = 13414003483 is a prime.

Together with 17708970781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17708930779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8854485389 + 8854485390.

It is an arithmetic number, because the mean of its divisors is an integer number (8854485390).

Almost surely, 2^17708970779 is an apocalyptic number.

17708970779 is a deficient number, since it is larger than the sum of its proper divisors (1).

17708970779 is an equidigital number, since it uses as much as digits as its factorization.

17708970779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10890936, while the sum is 62.

The spelling of 17708970779 in words is "seventeen billion, seven hundred eight million, nine hundred seventy thousand, seven hundred seventy-nine".