11123457911 has 4 divisors (see below), whose sum is σ = 11231452752. Its totient is φ = 11015463072.

The previous prime is 11123457887. The next prime is 11123457929. The reversal of 11123457911 is 11975432111.

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 11123457911 - 2¹⁸ = 11123195767 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 (11123457211) 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, 53997266 + ... + 53997471.

It is an arithmetic number, because the mean of its divisors is an integer number (2807863188).

Almost surely, 2^11123457911 is an apocalyptic number.

11123457911 is a deficient number, since it is larger than the sum of its proper divisors (107994841).

11123457911 is a wasteful number, since it uses less digits than its factorization.

11123457911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107994840.

The product of its digits is 7560, while the sum is 35.

The spelling of 11123457911 in words is "eleven billion, one hundred twenty-three million, four hundred fifty-seven thousand, nine hundred eleven".