17999001113 has 4 divisors (see below), whose sum is σ = 17999379300. Its totient is φ = 17998622928.

The previous prime is 17999001101. The next prime is 17999001121. The reversal of 17999001113 is 31110099971.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13992997264 + 4006003849 = 118292^2 + 63293^2 .

It is a cyclic number.

It is not a de Polignac number, because 17999001113 - 2²⁶ = 17931892249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17999001143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105338 + ... + 217011.

It is an arithmetic number, because the mean of its divisors is an integer number (4499844825).

Almost surely, 2^17999001113 is an apocalyptic number.

It is an amenable number.

17999001113 is a deficient number, since it is larger than the sum of its proper divisors (378187).

17999001113 is an equidigital number, since it uses as much as digits as its factorization.

17999001113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378186.

The product of its (nonzero) digits is 15309, while the sum is 41.

The spelling of 17999001113 in words is "seventeen billion, nine hundred ninety-nine million, one thousand, one hundred thirteen".