12105857895927 has 48 divisors (see below), whose sum is σ = 16930680560640. Its totient is φ = 7693522208064.

The previous prime is 12105857895919. The next prime is 12105857895941. The reversal of 12105857895927 is 72959875850121.

It is not a de Polignac number, because 12105857895927 - 2³ = 12105857895919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105857895907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 937051974 + ... + 937064892.

It is an arithmetic number, because the mean of its divisors is an integer number (352722511680).

Almost surely, 2^{12105857895927} is an apocalyptic number.

12105857895927 is a deficient number, since it is larger than the sum of its proper divisors (4824822664713).

12105857895927 is a wasteful number, since it uses less digits than its factorization.

12105857895927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14924 (or 14901 counting only the distinct ones).

The product of its (nonzero) digits is 127008000, while the sum is 69.

The spelling of 12105857895927 in words is "twelve trillion, one hundred five billion, eight hundred fifty-seven million, eight hundred ninety-five thousand, nine hundred twenty-seven".