99609009955 has 32 divisors (see below), whose sum is σ = 147142195200. Its totient is φ = 63037498752.

The previous prime is 99609009953. The next prime is 99609009961. The reversal of 99609009955 is 55990090699.

It is a cyclic number.

It is not a de Polignac number, because 99609009955 - 2¹ = 99609009953 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 99609009893 and 99609009902.

It is not an unprimeable number, because it can be changed into a prime (99609009953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2885286 + ... + 2919604.

It is an arithmetic number, because the mean of its divisors is an integer number (4598193600).

Almost surely, 2^99609009955 is an apocalyptic number.

99609009955 is a deficient number, since it is larger than the sum of its proper divisors (47533185245).

99609009955 is a wasteful number, since it uses less digits than its factorization.

99609009955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40723.

The product of its (nonzero) digits is 8857350, while the sum is 61.

The spelling of 99609009955 in words is "ninety-nine billion, six hundred nine million, nine thousand, nine hundred fifty-five".