12281870144 has 28 divisors (see below), whose sum is σ = 24375368064. Its totient is φ = 6140045184.

The previous prime is 12281870077. The next prime is 12281870179. The reversal of 12281870144 is 44107818221.

It is a junction number, because it is equal to n+sod(n) for n = 12281870098 and 12281870107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805439 + ... + 820545.

Almost surely, 2^12281870144 is an apocalyptic number.

It is an amenable number.

12281870144 is a deficient number, since it is larger than the sum of its proper divisors (12093497920).

12281870144 is a wasteful number, since it uses less digits than its factorization.

12281870144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27822 (or 27812 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The spelling of 12281870144 in words is "twelve billion, two hundred eighty-one million, eight hundred seventy thousand, one hundred forty-four".