166116135155013 has 6 divisors (see below), whose sum is σ = 239945528557254. Its totient is φ = 110744090103336.

The previous prime is 166116135154993. The next prime is 166116135155023. The reversal of 166116135155013 is 310551531611661.

166116135155013 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 1 + 6 + 135 + 1 + 5 + 501 + 3 = 666.

166116135155013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 93507024029409 + 72609111125604 = 9669903^2 + 8521098^2 .

It is not a de Polignac number, because 166116135155013 - 2³⁴ = 166098955285829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166116135155013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166116135155023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9228674175270 + ... + 9228674175287.

It is an arithmetic number, because the mean of its divisors is an integer number (39990921426209).

Almost surely, 2^{166116135155013} is an apocalyptic number.

It is an amenable number.

166116135155013 is a deficient number, since it is larger than the sum of its proper divisors (73829393402241).

166116135155013 is a wasteful number, since it uses less digits than its factorization.

166116135155013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18457348350563 (or 18457348350560 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

Adding to 166116135155013 its reverse (310551531611661), we get a palindrome (476667666766674).

The spelling of 166116135155013 in words is "one hundred sixty-six trillion, one hundred sixteen billion, one hundred thirty-five million, one hundred fifty-five thousand, thirteen".