11656656166530 has 64 divisors (see below), whose sum is σ = 28719246325248. Its totient is φ = 3026541281280.

The previous prime is 11656656166517. The next prime is 11656656166541. The reversal of 11656656166530 is 3566165665611.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21145311 + ... + 21689570.

It is an arithmetic number, because the mean of its divisors is an integer number (448738223832).

Almost surely, 2^{11656656166530} is an apocalyptic number.

11656656166530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11656656166530 is an abundant number, since it is smaller than the sum of its proper divisors (17062590158718).

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

11656656166530 is a wasteful number, since it uses less digits than its factorization.

11656656166530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42835131.

The product of its (nonzero) digits is 17496000, while the sum is 57.

The spelling of 11656656166530 in words is "eleven trillion, six hundred fifty-six billion, six hundred fifty-six million, one hundred sixty-six thousand, five hundred thirty".