990010001011 has 4 divisors (see below), whose sum is σ = 990012143800. Its totient is φ = 990007858224.

The previous prime is 990010001003. The next prime is 990010001063. The reversal of 990010001011 is 110100010099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 990010001011 - 2³ = 990010001003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990010001081) 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 3 ways as a sum of consecutive naturals, for example, 60306 + ... + 1408423.

It is an arithmetic number, because the mean of its divisors is an integer number (247503035950).

Almost surely, 2^990010001011 is an apocalyptic number.

990010001011 is a deficient number, since it is larger than the sum of its proper divisors (2142789).

990010001011 is a wasteful number, since it uses less digits than its factorization.

990010001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142788.

The product of its (nonzero) digits is 81, while the sum is 22.

The spelling of 990010001011 in words is "nine hundred ninety billion, ten million, one thousand, eleven".