11857978075 has 12 divisors (see below), whose sum is σ = 14841315720. Its totient is φ = 9397722560.

The previous prime is 11857978073. The next prime is 11857978079. The reversal of 11857978075 is 57087975811.

11857978075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11857978075 - 2¹ = 11857978073 is a prime.

It is a super-2 number, since 2×11857978075² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11857978073) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2213770 + ... + 2219119.

It is an arithmetic number, because the mean of its divisors is an integer number (1236776310).

Almost surely, 2^11857978075 is an apocalyptic number.

11857978075 is a deficient number, since it is larger than the sum of its proper divisors (2983337645).

11857978075 is a wasteful number, since it uses less digits than its factorization.

11857978075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433006 (or 4433001 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 58.

The spelling of 11857978075 in words is "eleven billion, eight hundred fifty-seven million, nine hundred seventy-eight thousand, seventy-five".