17279187979 has 2 divisors, whose sum is σ = 17279187980. Its totient is φ = 17279187978.

The previous prime is 17279187971. The next prime is 17279188007. The reversal of 17279187979 is 97978197271.

It is a weak prime.

It is an emirp because it is prime and its reverse (97978197271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17279187979 - 2³ = 17279187971 is a prime.

It is not a weakly prime, because it can be changed into another prime (17279187971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8639593989 + 8639593990.

It is an arithmetic number, because the mean of its divisors is an integer number (8639593990).

Almost surely, 2^17279187979 is an apocalyptic number.

17279187979 is a deficient number, since it is larger than the sum of its proper divisors (1).

17279187979 is an equidigital number, since it uses as much as digits as its factorization.

17279187979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28005264, while the sum is 67.

The spelling of 17279187979 in words is "seventeen billion, two hundred seventy-nine million, one hundred eighty-seven thousand, nine hundred seventy-nine".