17818149117 has 16 divisors (see below), whose sum is σ = 24028887168. Its totient is φ = 11743480320.

The previous prime is 17818149103. The next prime is 17818149133. The reversal of 17818149117 is 71194181871.

It is not a de Polignac number, because 17818149117 - 2⁷ = 17818148989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17818149917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134617 + ... + 231857.

It is an arithmetic number, because the mean of its divisors is an integer number (1501805448).

Almost surely, 2^17818149117 is an apocalyptic number.

It is an amenable number.

17818149117 is a deficient number, since it is larger than the sum of its proper divisors (6210738051).

17818149117 is a wasteful number, since it uses less digits than its factorization.

17818149117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97940.

The product of its digits is 112896, while the sum is 48.

The spelling of 17818149117 in words is "seventeen billion, eight hundred eighteen million, one hundred forty-nine thousand, one hundred seventeen".