17916879952 has 20 divisors (see below), whose sum is σ = 35560638036. Its totient is φ = 8739941120.

The previous prime is 17916879949. The next prime is 17916879979. The reversal of 17916879952 is 25997861971.

It can be written as a sum of positive squares in 2 ways, for example, as 1940931136 + 15975948816 = 44056^2 + 126396^2 .

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 13655503 + ... + 13656814.

Almost surely, 2^17916879952 is an apocalyptic number.

It is an amenable number.

17916879952 is a deficient number, since it is larger than the sum of its proper divisors (17643758084).

17916879952 is a wasteful number, since it uses less digits than its factorization.

17916879952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27312366 (or 27312360 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 64.

The spelling of 17916879952 in words is "seventeen billion, nine hundred sixteen million, eight hundred seventy-nine thousand, nine hundred fifty-two".