11656656166393 has 8 divisors (see below), whose sum is σ = 13324552392960. Its totient is φ = 9989424847680.

The previous prime is 11656656166369. The next prime is 11656656166409. The reversal of 11656656166393 is 39366165665611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11656656166393 - 2²¹ = 11656654069241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11656656166313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166189393 + ... + 166259518.

It is an arithmetic number, because the mean of its divisors is an integer number (1665569049120).

Almost surely, 2^{11656656166393} is an apocalyptic number.

It is an amenable number.

11656656166393 is a deficient number, since it is larger than the sum of its proper divisors (1667896226567).

11656656166393 is an equidigital number, since it uses as much as digits as its factorization.

11656656166393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332453927.

The product of its digits is 94478400, while the sum is 64.

The spelling of 11656656166393 in words is "eleven trillion, six hundred fifty-six billion, six hundred fifty-six million, one hundred sixty-six thousand, three hundred ninety-three".