55161666116685 has 24 divisors (see below), whose sum is σ = 97417583938584. Its totient is φ = 28864469312640.

The previous prime is 55161666116663. The next prime is 55161666116737. The reversal of 55161666116685 is 58661166616155.

It can be written as a sum of positive squares in 4 ways, for example, as 9117325899081 + 46044340217604 = 3019491^2 + 6785598^2 .

It is not a de Polignac number, because 55161666116685 - 2⁹ = 55161666116173 is a prime.

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, 11564288206 + ... + 11564292975.

It is an arithmetic number, because the mean of its divisors is an integer number (4059065997441).

Almost surely, 2^{55161666116685} is an apocalyptic number.

It is an amenable number.

55161666116685 is a deficient number, since it is larger than the sum of its proper divisors (42255917821899).

55161666116685 is a wasteful number, since it uses less digits than its factorization.

55161666116685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23128581245 (or 23128581242 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 63.

The spelling of 55161666116685 in words is "fifty-five trillion, one hundred sixty-one billion, six hundred sixty-six million, one hundred sixteen thousand, six hundred eighty-five".