11191007657171 has 24 divisors (see below), whose sum is σ = 11827513234944. Its totient is φ = 10587200223600.

The previous prime is 11191007657149. The next prime is 11191007657189. The reversal of 11191007657171 is 17175670019111.

It is not a de Polignac number, because 11191007657171 - 2²² = 11191003462867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11191007657101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1564953446 + ... + 1564960596.

It is an arithmetic number, because the mean of its divisors is an integer number (492813051456).

Almost surely, 2^{11191007657171} is an apocalyptic number.

11191007657171 is a deficient number, since it is larger than the sum of its proper divisors (636505577773).

11191007657171 is an equidigital number, since it uses as much as digits as its factorization.

11191007657171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12639 (or 12620 counting only the distinct ones).

The product of its (nonzero) digits is 92610, while the sum is 47.

The spelling of 11191007657171 in words is "eleven trillion, one hundred ninety-one billion, seven million, six hundred fifty-seven thousand, one hundred seventy-one".