99990000000001 has 4 divisors (see below), whose sum is σ = 99991419798100. Its totient is φ = 99988580201904.

The previous prime is 99989999999941. The next prime is 99990000000013. The reversal of 99990000000001 is 10000000009999.

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 55295226277776 + 44694773722225 = 7436076^2 + 6685415^2 .

It is a cyclic number.

It is not a de Polignac number, because 99990000000001 - 2¹⁷ = 99989999868929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99990000000301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709793406 + ... + 709934263.

It is an arithmetic number, because the mean of its divisors is an integer number (24997854949525).

Almost surely, 2^{99990000000001} is an apocalyptic number.

It is an amenable number.

99990000000001 is a deficient number, since it is larger than the sum of its proper divisors (1419798099).

99990000000001 is a wasteful number, since it uses less digits than its factorization.

99990000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419798098.

The product of its (nonzero) digits is 6561, while the sum is 37.

The spelling of 99990000000001 in words is "ninety-nine trillion, nine hundred ninety billion, one", and thus it is an aban number.