2091200363920 has 40 divisors (see below), whose sum is σ = 4953777475896. Its totient is φ = 820697499648.

The previous prime is 2091200363909. The next prime is 2091200363947. The reversal of 2091200363920 is 293630021902.

It can be written as a sum of positive squares in 4 ways, for example, as 57222380944 + 2033977982976 = 239212^2 + 1426176^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2091200363920.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246599577 + ... + 246608056.

Almost surely, 2^{2091200363920} is an apocalyptic number.

2091200363920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2091200363920 is an abundant number, since it is smaller than the sum of its proper divisors (2862577111976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2091200363920 is a wasteful number, since it uses less digits than its factorization.

2091200363920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493207699 (or 493207693 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 2091200363920 in words is "two trillion, ninety-one billion, two hundred million, three hundred sixty-three thousand, nine hundred twenty".