1990899616612 has 24 divisors (see below), whose sum is σ = 3752736125600. Its totient is φ = 921126136896.

The previous prime is 1990899616609. The next prime is 1990899616619. The reversal of 1990899616612 is 2166169980991.

It is not an unprimeable number, because it can be changed into a prime (1990899616619) 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 7 ways as a sum of consecutive naturals, for example, 304601937 + ... + 304608472.

Almost surely, 2^{1990899616612} is an apocalyptic number.

It is an amenable number.

1990899616612 is a deficient number, since it is larger than the sum of its proper divisors (1761836508988).

1990899616612 is a wasteful number, since it uses less digits than its factorization.

1990899616612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609210475 (or 609210473 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 67.

The spelling of 1990899616612 in words is "one trillion, nine hundred ninety billion, eight hundred ninety-nine million, six hundred sixteen thousand, six hundred twelve".