17718143479 has 2 divisors, whose sum is σ = 17718143480. Its totient is φ = 17718143478.

The previous prime is 17718143467. The next prime is 17718143537. The reversal of 17718143479 is 97434181771.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17718143479 - 2⁷ = 17718143351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17718141479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8859071739 + 8859071740.

It is an arithmetic number, because the mean of its divisors is an integer number (8859071740).

Almost surely, 2^17718143479 is an apocalyptic number.

17718143479 is a deficient number, since it is larger than the sum of its proper divisors (1).

17718143479 is an equidigital number, since it uses as much as digits as its factorization.

17718143479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 52.

The spelling of 17718143479 in words is "seventeen billion, seven hundred eighteen million, one hundred forty-three thousand, four hundred seventy-nine".