5166155161 has 4 divisors (see below), whose sum is σ = 5168330932. Its totient is φ = 5163979392.

The previous prime is 5166155123. The next prime is 5166155243. The reversal of 5166155161 is 1615516615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2357685136 + 2808470025 = 48556^2 + 52995^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166155161 - 2⁹ = 5166154649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5166155161.

It is not an unprimeable number, because it can be changed into a prime (5166155101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084320 + ... + 1089073.

It is an arithmetic number, because the mean of its divisors is an integer number (1292082733).

Almost surely, 2^5166155161 is an apocalyptic number.

It is an amenable number.

5166155161 is a deficient number, since it is larger than the sum of its proper divisors (2175771).

5166155161 is a wasteful number, since it uses less digits than its factorization.

5166155161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175770.

The product of its digits is 27000, while the sum is 37.

The square root of 5166155161 is about 71875.9706786628. The cubic root of 5166155161 is about 1728.7113440084.

The spelling of 5166155161 in words is "five billion, one hundred sixty-six million, one hundred fifty-five thousand, one hundred sixty-one".