9955555599 has 24 divisors (see below), whose sum is σ = 14766345216. Its totient is φ = 5960957200.

The previous prime is 9955555583. The next prime is 9955555601.

9955555599 is nontrivially palindromic in base 10.

9955555599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9955555599 - 2⁴ = 9955555583 is a prime.

It is a super-2 number, since 2×9955555599² (a number of 21 digits) contains 22 as substring.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955555199) 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 23 ways as a sum of consecutive naturals, for example, 135087 + ... + 195344.

It is an arithmetic number, because the mean of its divisors is an integer number (615264384).

Almost surely, 2^9955555599 is an apocalyptic number.

9955555599 is a deficient number, since it is larger than the sum of its proper divisors (4810789617).

9955555599 is a wasteful number, since it uses less digits than its factorization.

9955555599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330539 (or 330528 counting only the distinct ones).

The product of its digits is 102515625, while the sum is 66.

The square root of 9955555599 is about 99777.5305316783. The cubic root of 9955555599 is about 2151.2381978286.

The spelling of 9955555599 in words is "nine billion, nine hundred fifty-five million, five hundred fifty-five thousand, five hundred ninety-nine".