20109100195 has 8 divisors (see below), whose sum is σ = 24186911040. Its totient is φ = 16049952960.

The previous prime is 20109100189. The next prime is 20109100201. The reversal of 20109100195 is 59100190102.

It is an interprime number because it is at equal distance from previous prime (20109100189) and next prime (20109100201).

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

It is not a de Polignac number, because 20109100195 - 2¹⁵ = 20109067427 is a prime.

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, 4663530 + ... + 4667839.

It is an arithmetic number, because the mean of its divisors is an integer number (3023363880).

Almost surely, 2^20109100195 is an apocalyptic number.

20109100195 is a deficient number, since it is larger than the sum of its proper divisors (4077810845).

20109100195 is an equidigital number, since it uses as much as digits as its factorization.

20109100195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331805.

The product of its (nonzero) digits is 810, while the sum is 28.

Adding to 20109100195 its reverse (59100190102), we get a palindrome (79209290297).

The spelling of 20109100195 in words is "twenty billion, one hundred nine million, one hundred thousand, one hundred ninety-five".