12144655845 has 48 divisors (see below), whose sum is σ = 25103999232. Its totient is φ = 5310455040.

The previous prime is 12144655819. The next prime is 12144655867. The reversal of 12144655845 is 54855644121.

12144655845 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 4 + 65 + 584 + 5 = 666.

It is not a de Polignac number, because 12144655845 - 2⁷ = 12144655717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12144655845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 830896 + ... + 845385.

It is an arithmetic number, because the mean of its divisors is an integer number (522999984).

Almost surely, 2^12144655845 is an apocalyptic number.

12144655845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12144655845 is an abundant number, since it is smaller than the sum of its proper divisors (12959343387).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12144655845 is a wasteful number, since it uses less digits than its factorization.

12144655845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676322 (or 1676319 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The spelling of 12144655845 in words is "twelve billion, one hundred forty-four million, six hundred fifty-five thousand, eight hundred forty-five".