17986268971 has 12 divisors (see below), whose sum is σ = 19965787632. Its totient is φ = 16189250000.

The previous prime is 17986268929. The next prime is 17986268981.

17986268971 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 17986268971 - 2³³ = 9396334379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17986268981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 723655 + ... + 748096.

It is an arithmetic number, because the mean of its divisors is an integer number (1663815636).

Almost surely, 2^17986268971 is an apocalyptic number.

17986268971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

17986268971 is a deficient number, since it is larger than the sum of its proper divisors (1979518661).

17986268971 is a wasteful number, since it uses less digits than its factorization.

17986268971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471874 (or 1471863 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 64.

The spelling of 17986268971 in words is "seventeen billion, nine hundred eighty-six million, two hundred sixty-eight thousand, nine hundred seventy-one".