12400442815284 has 72 divisors (see below), whose sum is σ = 32418580044032. Its totient is φ = 3992494199040.

The previous prime is 12400442815273. The next prime is 12400442815297. The reversal of 12400442815284 is 48251824400421.

12400442815284 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 0 + 4 + 42 + 81 + 528 + 4 = 666.

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, 10039189 + ... + 11206524.

Almost surely, 2^{12400442815284} is an apocalyptic number.

It is an amenable number.

12400442815284 is an abundant number, since it is smaller than the sum of its proper divisors (20018137228748).

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

12400442815284 is a wasteful number, since it uses less digits than its factorization.

12400442815284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21246277 (or 21246272 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 45.

The spelling of 12400442815284 in words is "twelve trillion, four hundred billion, four hundred forty-two million, eight hundred fifteen thousand, two hundred eighty-four".