11891677211 has 4 divisors (see below), whose sum is σ = 11905176024. Its totient is φ = 11878178400.

The previous prime is 11891677201. The next prime is 11891677243. The reversal of 11891677211 is 11277619811.

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

It is a cyclic number.

It is not a de Polignac number, because 11891677211 - 2²² = 11887482907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11891677201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6748085 + ... + 6749846.

It is an arithmetic number, because the mean of its divisors is an integer number (2976294006).

Almost surely, 2^11891677211 is an apocalyptic number.

11891677211 is a deficient number, since it is larger than the sum of its proper divisors (13498813).

11891677211 is an equidigital number, since it uses as much as digits as its factorization.

11891677211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13498812.

The product of its digits is 42336, while the sum is 44.

The spelling of 11891677211 in words is "eleven billion, eight hundred ninety-one million, six hundred seventy-seven thousand, two hundred eleven".