17417987879 has 2 divisors, whose sum is σ = 17417987880. Its totient is φ = 17417987878.

The previous prime is 17417987843. The next prime is 17417987921. The reversal of 17417987879 is 97878971471.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17417987879 - 2¹² = 17417983783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17417987779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8708993939 + 8708993940.

It is an arithmetic number, because the mean of its divisors is an integer number (8708993940).

Almost surely, 2^17417987879 is an apocalyptic number.

17417987879 is a deficient number, since it is larger than the sum of its proper divisors (1).

17417987879 is an equidigital number, since it uses as much as digits as its factorization.

17417987879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49787136, while the sum is 68.

The spelling of 17417987879 in words is "seventeen billion, four hundred seventeen million, nine hundred eighty-seven thousand, eight hundred seventy-nine".