11994691895 has 16 divisors (see below), whose sum is σ = 14908707072. Its totient is φ = 9254484480.

The previous prime is 11994691879. The next prime is 11994691903. The reversal of 11994691895 is 59819649911.

It is not a de Polignac number, because 11994691895 - 2⁴ = 11994691879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86642 + ... + 177471.

It is an arithmetic number, because the mean of its divisors is an integer number (931794192).

Almost surely, 2^11994691895 is an apocalyptic number.

11994691895 is a deficient number, since it is larger than the sum of its proper divisors (2914015177).

11994691895 is a wasteful number, since it uses less digits than its factorization.

11994691895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264442.

The product of its digits is 6298560, while the sum is 62.

The spelling of 11994691895 in words is "eleven billion, nine hundred ninety-four million, six hundred ninety-one thousand, eight hundred ninety-five".