12195136855 has 24 divisors (see below), whose sum is σ = 16145059392. Its totient is φ = 8836344000.

The previous prime is 12195136823. The next prime is 12195136937. The reversal of 12195136855 is 55863159121.

It is not a de Polignac number, because 12195136855 - 2⁵ = 12195136823 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126765 + ... + 201145.

It is an arithmetic number, because the mean of its divisors is an integer number (672710808).

Almost surely, 2^12195136855 is an apocalyptic number.

12195136855 is a deficient number, since it is larger than the sum of its proper divisors (3949922537).

12195136855 is a wasteful number, since it uses less digits than its factorization.

12195136855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74679 (or 74668 counting only the distinct ones).

The product of its digits is 324000, while the sum is 46.

The spelling of 12195136855 in words is "twelve billion, one hundred ninety-five million, one hundred thirty-six thousand, eight hundred fifty-five".