17969971408 has 10 divisors (see below), whose sum is σ = 34816819634. Its totient is φ = 8984985696.

The previous prime is 17969971403. The next prime is 17969971421. The reversal of 17969971408 is 80417996971.

It can be written as a sum of positive squares in only one way, i.e., 17199797904 + 770173504 = 131148^2 + 27752^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17969971403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561561591 + ... + 561561622.

Almost surely, 2^17969971408 is an apocalyptic number.

It is an amenable number.

17969971408 is a deficient number, since it is larger than the sum of its proper divisors (16846848226).

17969971408 is a wasteful number, since it uses less digits than its factorization.

17969971408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123123221 (or 1123123215 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 61.

The spelling of 17969971408 in words is "seventeen billion, nine hundred sixty-nine million, nine hundred seventy-one thousand, four hundred eight".