113555566899 has 20 divisors (see below), whose sum is σ = 169909189296. Its totient is φ = 75580181136.

The previous prime is 113555566889. The next prime is 113555566907. The reversal of 113555566899 is 998665555311.

It is a happy number.

113555566899 is a `hidden beast` number, since 1 + 13 + 5 + 5 + 556 + 68 + 9 + 9 = 666.

It is not a de Polignac number, because 113555566899 - 2²³ = 113547178291 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (113555566889) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 1093839 + ... + 1193144.

Almost surely, 2^113555566899 is an apocalyptic number.

113555566899 is a deficient number, since it is larger than the sum of its proper divisors (56353622397).

113555566899 is an equidigital number, since it uses as much as digits as its factorization.

113555566899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287608 (or 2287599 counting only the distinct ones).

The product of its digits is 43740000, while the sum is 63.

The spelling of 113555566899 in words is "one hundred thirteen billion, five hundred fifty-five million, five hundred sixty-six thousand, eight hundred ninety-nine".