8999945555 has 16 divisors (see below), whose sum is σ = 11370689280. Its totient is φ = 6819609312.

The previous prime is 8999945533. The next prime is 8999945597. The reversal of 8999945555 is 5555499998.

It is a cyclic number.

It is not a de Polignac number, because 8999945555 - 2¹⁴ = 8999929171 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894362 + ... + 904368.

It is an arithmetic number, because the mean of its divisors is an integer number (710668080).

Almost surely, 2^8999945555 is an apocalyptic number.

8999945555 is a deficient number, since it is larger than the sum of its proper divisors (2370743725).

8999945555 is a wasteful number, since it uses less digits than its factorization.

8999945555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19498.

The product of its digits is 131220000, while the sum is 68.

The square root of 8999945555 is about 94868.0428542721. The cubic root of 8999945555 is about 2080.0796285929.

The spelling of 8999945555 in words is "eight billion, nine hundred ninety-nine million, nine hundred forty-five thousand, five hundred fifty-five".