11857968045999 has 24 divisors (see below), whose sum is σ = 17217857465952. Its totient is φ = 7863925063680.

The previous prime is 11857968045943. The next prime is 11857968046009. The reversal of 11857968045999 is 99954086975811.

11857968045999 is a `hidden beast` number, since 1 + 1 + 8 + 5 + 79 + 6 + 8 + 0 + 459 + 99 = 666.

It is not a de Polignac number, because 11857968045999 - 2⁷ = 11857968045871 is a prime.

It is a super-2 number, since 2×11857968045999² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11857968045199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33603919 + ... + 33954959.

It is an arithmetic number, because the mean of its divisors is an integer number (717410727748).

Almost surely, 2^{11857968045999} is an apocalyptic number.

11857968045999 is a deficient number, since it is larger than the sum of its proper divisors (5359889419953).

11857968045999 is a wasteful number, since it uses less digits than its factorization.

11857968045999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370687 (or 370684 counting only the distinct ones).

The product of its (nonzero) digits is 1763596800, while the sum is 81.

The spelling of 11857968045999 in words is "eleven trillion, eight hundred fifty-seven billion, nine hundred sixty-eight million, forty-five thousand, nine hundred ninety-nine".