9900555010105 has 4 divisors (see below), whose sum is σ = 11880666012132. Its totient is φ = 7920444008080.

The previous prime is 9900555010097. The next prime is 9900555010111. The reversal of 9900555010105 is 5010105550099.

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 4331460038656 + 5569094971449 = 2081216^2 + 2359893^2 .

It is not a de Polignac number, because 9900555010105 - 2³ = 9900555010097 is a prime.

It is a super-2 number, since 2×9900555010105² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 990055501006 + ... + 990055501015.

It is an arithmetic number, because the mean of its divisors is an integer number (2970166503033).

Almost surely, 2^{9900555010105} is an apocalyptic number.

It is an amenable number.

9900555010105 is a deficient number, since it is larger than the sum of its proper divisors (1980111002027).

9900555010105 is a wasteful number, since it uses less digits than its factorization.

9900555010105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980111002026.

The product of its (nonzero) digits is 50625, while the sum is 40.

The spelling of 9900555010105 in words is "nine trillion, nine hundred billion, five hundred fifty-five million, ten thousand, one hundred five".