1980819215599 has 12 divisors (see below), whose sum is σ = 2305202692728. Its totient is φ = 1697119678800.

The previous prime is 1980819215597. The next prime is 1980819215653. The reversal of 1980819215599 is 9955129180891.

It is not a de Polignac number, because 1980819215599 - 2¹ = 1980819215597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980819215591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8519397 + ... + 8748814.

It is an arithmetic number, because the mean of its divisors is an integer number (192100224394).

Almost surely, 2^{1980819215599} is an apocalyptic number.

1980819215599 is a deficient number, since it is larger than the sum of its proper divisors (324383477129).

1980819215599 is a wasteful number, since it uses less digits than its factorization.

1980819215599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17270566 (or 17270559 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 67.

The spelling of 1980819215599 in words is "one trillion, nine hundred eighty billion, eight hundred nineteen million, two hundred fifteen thousand, five hundred ninety-nine".