11612111611 has 4 divisors (see below), whose sum is σ = 12223275400. Its totient is φ = 11000947824.

The previous prime is 11612111593. The next prime is 11612111659. The reversal of 11612111611 is 11611121611.

11612111611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11612111611 - 2¹⁵ = 11612078843 is a prime.

It is a super-2 number, since 2×11612111611² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11612111671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305581866 + ... + 305581903.

It is an arithmetic number, because the mean of its divisors is an integer number (3055818850).

Almost surely, 2^11612111611 is an apocalyptic number.

11612111611 is a deficient number, since it is larger than the sum of its proper divisors (611163789).

11612111611 is an equidigital number, since it uses as much as digits as its factorization.

11612111611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611163788.

The product of its digits is 72, while the sum is 22.

The spelling of 11612111611 in words is "eleven billion, six hundred twelve million, one hundred eleven thousand, six hundred eleven".