11531612105 has 16 divisors (see below), whose sum is σ = 14912783424. Its totient is φ = 8509713600.

The previous prime is 11531612089. The next prime is 11531612119. The reversal of 11531612105 is 50121613511.

It is not a de Polignac number, because 11531612105 - 2⁴ = 11531612089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33182 + ... + 155448.

It is an arithmetic number, because the mean of its divisors is an integer number (932048964).

Almost surely, 2^11531612105 is an apocalyptic number.

It is an amenable number.

11531612105 is a deficient number, since it is larger than the sum of its proper divisors (3381171319).

11531612105 is a wasteful number, since it uses less digits than its factorization.

11531612105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123736.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 11531612105 in words is "eleven billion, five hundred thirty-one million, six hundred twelve thousand, one hundred five".