1000990990009 has 4 divisors (see below), whose sum is σ = 1019877612516. Its totient is φ = 982104367504.

The previous prime is 1000990990007. The next prime is 1000990990073. The reversal of 1000990990009 is 9000990990001.

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 424686822400 + 576304167609 = 651680^2 + 759147^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000990990009 - 2¹ = 1000990990007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000990990007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9443311174 + ... + 9443311279.

It is an arithmetic number, because the mean of its divisors is an integer number (254969403129).

Almost surely, 2^{1000990990009} is an apocalyptic number.

It is an amenable number.

1000990990009 is a deficient number, since it is larger than the sum of its proper divisors (18886622507).

1000990990009 is an equidigital number, since it uses as much as digits as its factorization.

1000990990009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18886622506.

The product of its (nonzero) digits is 59049, while the sum is 46.

The spelling of 1000990990009 in words is "one trillion, nine hundred ninety million, nine hundred ninety thousand, nine".