11731505105 has 16 divisors (see below), whose sum is σ = 14268623040. Its totient is φ = 9258330048.

The previous prime is 11731505089. The next prime is 11731505147. The reversal of 11731505105 is 50150513711.

11731505105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11731505105 - 2⁴ = 11731505089 is a prime.

It is a super-2 number, since 2×11731505105² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 262751 + ... + 304139.

It is an arithmetic number, because the mean of its divisors is an integer number (891788940).

Almost surely, 2^11731505105 is an apocalyptic number.

It is an amenable number.

11731505105 is a deficient number, since it is larger than the sum of its proper divisors (2537117935).

11731505105 is an equidigital number, since it uses as much as digits as its factorization.

11731505105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42160.

The product of its (nonzero) digits is 2625, while the sum is 29.

The spelling of 11731505105 in words is "eleven billion, seven hundred thirty-one million, five hundred five thousand, one hundred five".