11656656166525 has 24 divisors (see below), whose sum is σ = 15085176165504. Its totient is φ = 8918411304000.

The previous prime is 11656656166517. The next prime is 11656656166541. The reversal of 11656656166525 is 52566165665611.

It is not a de Polignac number, because 11656656166525 - 2³ = 11656656166517 is a prime.

It is a Duffinian number.

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, 1846672 + ... + 5169478.

It is an arithmetic number, because the mean of its divisors is an integer number (628549006896).

Almost surely, 2^{11656656166525} is an apocalyptic number.

It is an amenable number.

11656656166525 is a deficient number, since it is larger than the sum of its proper divisors (3428519998979).

11656656166525 is a wasteful number, since it uses less digits than its factorization.

11656656166525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328941 (or 3328936 counting only the distinct ones).

The product of its digits is 58320000, while the sum is 61.

The spelling of 11656656166525 in words is "eleven trillion, six hundred fifty-six billion, six hundred fifty-six million, one hundred sixty-six thousand, five hundred twenty-five".