10891108911 has 4 divisors (see below), whose sum is σ = 14521478552. Its totient is φ = 7260739272.

The previous prime is 10891108903. The next prime is 10891108919. The reversal of 10891108911 is 11980119801.

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

It is an interprime number because it is at equal distance from previous prime (10891108903) and next prime (10891108919).

It is not a de Polignac number, because 10891108911 - 2³ = 10891108903 is a prime.

It is a super-2 number, since 2×10891108911² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10891108911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10891108919) 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, 1815184816 + ... + 1815184821.

It is an arithmetic number, because the mean of its divisors is an integer number (3630369638).

Almost surely, 2^10891108911 is an apocalyptic number.

10891108911 is a deficient number, since it is larger than the sum of its proper divisors (3630369641).

10891108911 is an equidigital number, since it uses as much as digits as its factorization.

10891108911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630369640.

The product of its (nonzero) digits is 5184, while the sum is 39.

The spelling of 10891108911 in words is "ten billion, eight hundred ninety-one million, one hundred eight thousand, nine hundred eleven".