1990450650008 has 16 divisors (see below), whose sum is σ = 3732700625880. Its totient is φ = 995063816448.

The previous prime is 1990450649969. The next prime is 1990450650029. The reversal of 1990450650008 is 8000560540991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20136185 + ... + 20234792.

Almost surely, 2^{1990450650008} is an apocalyptic number.

It is an amenable number.

1990450650008 is a deficient number, since it is larger than the sum of its proper divisors (1742249975872).

1990450650008 is a wasteful number, since it uses less digits than its factorization.

1990450650008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40377146 (or 40377142 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 1990450650008 in words is "one trillion, nine hundred ninety billion, four hundred fifty million, six hundred fifty thousand, eight".