11166161606555 has 8 divisors (see below), whose sum is σ = 13400168876592. Its totient is φ = 8932412652768.

The previous prime is 11166161606549. The next prime is 11166161606563. The reversal of 11166161606555 is 55560616166111.

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 11166161606555 - 2²⁴ = 11166144829339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64483949 + ... + 64656878.

It is an arithmetic number, because the mean of its divisors is an integer number (1675021109574).

Almost surely, 2^{11166161606555} is an apocalyptic number.

11166161606555 is a deficient number, since it is larger than the sum of its proper divisors (2234007270037).

11166161606555 is a wasteful number, since it uses less digits than its factorization.

11166161606555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129158125.

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 11166161606555 in words is "eleven trillion, one hundred sixty-six billion, one hundred sixty-one million, six hundred six thousand, five hundred fifty-five".