11805695999 has 12 divisors (see below), whose sum is σ = 12630460896. Its totient is φ = 11031108768.

The previous prime is 11805695989. The next prime is 11805696017. The reversal of 11805695999 is 99959650811.

It is a de Polignac number, because none of the positive numbers 2^k-11805695999 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 (11805695989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197639 + ... + 250344.

It is an arithmetic number, because the mean of its divisors is an integer number (1052538408).

Almost surely, 2^11805695999 is an apocalyptic number.

11805695999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11805695999 is a deficient number, since it is larger than the sum of its proper divisors (824764897).

11805695999 is an equidigital number, since it uses as much as digits as its factorization.

11805695999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448094 (or 448075 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 62.

The spelling of 11805695999 in words is "eleven billion, eight hundred five million, six hundred ninety-five thousand, nine hundred ninety-nine".