11611110105 has 64 divisors (see below), whose sum is σ = 23676526080. Its totient is φ = 5288654592.

The previous prime is 11611110089. The next prime is 11611110139. The reversal of 11611110105 is 50101111611.

It is a happy number.

It is not a de Polignac number, because 11611110105 - 2⁴ = 11611110089 is a prime.

It is a super-2 number, since 2×11611110105² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 239587 + ... + 283943.

It is an arithmetic number, because the mean of its divisors is an integer number (369945720).

Almost surely, 2^11611110105 is an apocalyptic number.

11611110105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11611110105 is an abundant number, since it is smaller than the sum of its proper divisors (12065415975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11611110105 is a wasteful number, since it uses less digits than its factorization.

11611110105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44655 (or 44649 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 18.

Adding to 11611110105 its reverse (50101111611), we get a palindrome (61712221716).

The spelling of 11611110105 in words is "eleven billion, six hundred eleven million, one hundred ten thousand, one hundred five".