12661111160604 has 36 divisors (see below), whose sum is σ = 32156155431400. Its totient is φ = 4200368628960.

The previous prime is 12661111160549. The next prime is 12661111160617. The reversal of 12661111160604 is 40606111116621.

12661111160604 is a `hidden beast` number, since 1 + 26 + 6 + 1 + 1 + 11 + 16 + 0 + 604 = 666.

12661111160604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 833398879 + ... + 833414070.

Almost surely, 2^{12661111160604} is an apocalyptic number.

It is an amenable number.

12661111160604 is an abundant number, since it is smaller than the sum of its proper divisors (19495044270796).

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

12661111160604 is a wasteful number, since it uses less digits than its factorization.

12661111160604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666813170 (or 1666813165 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 12661111160604 in words is "twelve trillion, six hundred sixty-one billion, one hundred eleven million, one hundred sixty thousand, six hundred four".