12555613404 has 36 divisors (see below), whose sum is σ = 32052045480. Its totient is φ = 4143765600.

The previous prime is 12555613379. The next prime is 12555613457. The reversal of 12555613404 is 40431655521.

12555613404 is a `hidden beast` number, since 1 + 2 + 55 + 561 + 3 + 40 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1722934 + ... + 1730205.

Almost surely, 2^12555613404 is an apocalyptic number.

It is an amenable number.

12555613404 is an abundant number, since it is smaller than the sum of its proper divisors (19496432076).

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

12555613404 is a wasteful number, since it uses less digits than its factorization.

12555613404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453250 (or 3453245 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 12555613404 in words is "twelve billion, five hundred fifty-five million, six hundred thirteen thousand, four hundred four".