100091009191 has 8 divisors (see below), whose sum is σ = 107028011664. Its totient is φ = 93270595200.

The previous prime is 100091009189. The next prime is 100091009201. The reversal of 100091009191 is 191900190001.

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

It is not a de Polignac number, because 100091009191 - 2¹ = 100091009189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100091009101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29145345 + ... + 29148778.

It is an arithmetic number, because the mean of its divisors is an integer number (13378501458).

Almost surely, 2^100091009191 is an apocalyptic number.

100091009191 is a deficient number, since it is larger than the sum of its proper divisors (6937002473).

100091009191 is a wasteful number, since it uses less digits than its factorization.

100091009191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58294241.

The product of its (nonzero) digits is 729, while the sum is 31.

Adding to 100091009191 its reverse (191900190001), we get a palindrome (291991199192).

The spelling of 100091009191 in words is "one hundred billion, ninety-one million, nine thousand, one hundred ninety-one".