17912471959 has 2 divisors, whose sum is σ = 17912471960. Its totient is φ = 17912471958.

The previous prime is 17912471933. The next prime is 17912471971. The reversal of 17912471959 is 95917421971.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17912471959 - 2²⁷ = 17778254231 is a prime.

It is a super-2 number, since 2×17912471959² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17912471989) 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, 8956235979 + 8956235980.

It is an arithmetic number, because the mean of its divisors is an integer number (8956235980).

Almost surely, 2^17912471959 is an apocalyptic number.

17912471959 is a deficient number, since it is larger than the sum of its proper divisors (1).

17912471959 is an equidigital number, since it uses as much as digits as its factorization.

17912471959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 55.

The spelling of 17912471959 in words is "seventeen billion, nine hundred twelve million, four hundred seventy-one thousand, nine hundred fifty-nine".