10091020938191 has 4 divisors (see below), whose sum is σ = 10305723511392. Its totient is φ = 9876318364992.

The previous prime is 10091020938179. The next prime is 10091020938217. The reversal of 10091020938191 is 19183902019001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10091020938191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10091020931191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107351286530 + ... + 107351286623.

It is an arithmetic number, because the mean of its divisors is an integer number (2576430877848).

Almost surely, 2^{10091020938191} is an apocalyptic number.

10091020938191 is a deficient number, since it is larger than the sum of its proper divisors (214702573201).

10091020938191 is an equidigital number, since it uses as much as digits as its factorization.

10091020938191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214702573200.

The product of its (nonzero) digits is 34992, while the sum is 44.

The spelling of 10091020938191 in words is "ten trillion, ninety-one billion, twenty million, nine hundred thirty-eight thousand, one hundred ninety-one".