2109189750400 has 48 divisors (see below), whose sum is σ = 5210357813190. Its totient is φ = 843675898880.

The previous prime is 2109189750341. The next prime is 2109189750419. The reversal of 2109189750400 is 40579819012.

It can be written as a sum of positive squares in 3 ways, for example, as 1875344002624 + 233845747776 = 1369432^2 + 483576^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 329557699 + ... + 329564098.

Almost surely, 2^{2109189750400} is an apocalyptic number.

2109189750400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2109189750400 is an abundant number, since it is smaller than the sum of its proper divisors (3101168062790).

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

2109189750400 is an equidigital number, since it uses as much as digits as its factorization.

2109189750400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659121821 (or 659121804 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 2109189750400 in words is "two trillion, one hundred nine billion, one hundred eighty-nine million, seven hundred fifty thousand, four hundred".