2091189210020 has 24 divisors (see below), whose sum is σ = 4391845382904. Its totient is φ = 836409390336.

The previous prime is 2091189209969. The next prime is 2091189210053. The reversal of 2091189210020 is 200129811902.

It can be written as a sum of positive squares in 4 ways, for example, as 70310886244 + 2020878323776 = 265162^2 + 1421576^2 .

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, 3884297 + ... + 4389776.

It is an arithmetic number, because the mean of its divisors is an integer number (182993557621).

Almost surely, 2^{2091189210020} is an apocalyptic number.

2091189210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2091189210020 is an abundant number, since it is smaller than the sum of its proper divisors (2300656172884).

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

2091189210020 is a wasteful number, since it uses less digits than its factorization.

2091189210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8286719 (or 8286717 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 2091189210020 in words is "two trillion, ninety-one billion, one hundred eighty-nine million, two hundred ten thousand, twenty".