2050205551990 has 16 divisors (see below), whose sum is σ = 3700263753648. Its totient is φ = 817883607456.

The previous prime is 2050205551799. The next prime is 2050205552093. The reversal of 2050205551990 is 991555020502.

It is a congruent number.

It is an unprimeable number.

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, 274822752 + ... + 274830211.

It is an arithmetic number, because the mean of its divisors is an integer number (231266484603).

Almost surely, 2^{2050205551990} is an apocalyptic number.

2050205551990 is a deficient number, since it is larger than the sum of its proper divisors (1650058201658).

2050205551990 is a wasteful number, since it uses less digits than its factorization.

2050205551990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549653343.

The product of its (nonzero) digits is 202500, while the sum is 43.

The spelling of 2050205551990 in words is "two trillion, fifty billion, two hundred five million, five hundred fifty-one thousand, nine hundred ninety".