12012812604 has 72 divisors (see below), whose sum is σ = 33756474752. Its totient is φ = 3577011840.

The previous prime is 12012812557. The next prime is 12012812611. The reversal of 12012812604 is 40621821021.

12012812604 is a `hidden beast` number, since 1 + 20 + 1 + 28 + 12 + 604 = 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, 399499 + ... + 428514.

Almost surely, 2^12012812604 is an apocalyptic number.

It is an amenable number.

12012812604 is an abundant number, since it is smaller than the sum of its proper divisors (21743662148).

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

12012812604 is a wasteful number, since it uses less digits than its factorization.

12012812604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828067 (or 828062 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The spelling of 12012812604 in words is "twelve billion, twelve million, eight hundred twelve thousand, six hundred four".