5161165111 has 4 divisors (see below), whose sum is σ = 5432805400. Its totient is φ = 4889524824.

The previous prime is 5161165027. The next prime is 5161165123. The reversal of 5161165111 is 1115611615.

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

It is a cyclic number.

It is not a de Polignac number, because 5161165111 - 2¹³ = 5161156919 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 5161165111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161165181) 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, 135820116 + ... + 135820153.

It is an arithmetic number, because the mean of its divisors is an integer number (1358201350).

Almost surely, 2^5161165111 is an apocalyptic number.

5161165111 is a deficient number, since it is larger than the sum of its proper divisors (271640289).

5161165111 is a wasteful number, since it uses less digits than its factorization.

5161165111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271640288.

The product of its digits is 900, while the sum is 28.

The square root of 5161165111 is about 71841.2493697040. The cubic root of 5161165111 is about 1728.1545705023.

Adding to 5161165111 its reverse (1115611615), we get a palindrome (6276776726).

The spelling of 5161165111 in words is "five billion, one hundred sixty-one million, one hundred sixty-five thousand, one hundred eleven".