2109802171795 has 8 divisors (see below), whose sum is σ = 2563810234560. Its totient is φ = 1666476651840.

The previous prime is 2109802171781. The next prime is 2109802171831. The reversal of 2109802171795 is 5971712089012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2109802171795 - 2⁹ = 2109802171283 is a prime.

It is a super-2 number, since 2×2109802171795² (a number of 25 digits) contains 22 as substring.

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, 2670635266 + ... + 2670636055.

It is an arithmetic number, because the mean of its divisors is an integer number (320476279320).

Almost surely, 2^{2109802171795} is an apocalyptic number.

2109802171795 is a deficient number, since it is larger than the sum of its proper divisors (454008062765).

2109802171795 is an equidigital number, since it uses as much as digits as its factorization.

2109802171795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341271405.

The product of its (nonzero) digits is 635040, while the sum is 52.

The spelling of 2109802171795 in words is "two trillion, one hundred nine billion, eight hundred two million, one hundred seventy-one thousand, seven hundred ninety-five".