5161166161 has 16 divisors (see below), whose sum is σ = 5370140160. Its totient is φ = 4955005440.

The previous prime is 5161166147. The next prime is 5161166173. The reversal of 5161166161 is 1616611615.

It is a cyclic number.

It is not a de Polignac number, because 5161166161 - 2³¹ = 3013682513 is a prime.

It is a super-2 number, since 2×5161166161² = 53275272282902955842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5161266161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2557825 + ... + 2559841.

It is an arithmetic number, because the mean of its divisors is an integer number (335633760).

Almost surely, 2^5161166161 is an apocalyptic number.

It is an amenable number.

5161166161 is a deficient number, since it is larger than the sum of its proper divisors (208973999).

5161166161 is a wasteful number, since it uses less digits than its factorization.

5161166161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664.

The product of its digits is 6480, while the sum is 34.

The square root of 5161166161 is about 71841.2566774830. The cubic root of 5161166161 is about 1728.1546876956.

Adding to 5161166161 its reverse (1616611615), we get a palindrome (6777777776).

The spelling of 5161166161 in words is "five billion, one hundred sixty-one million, one hundred sixty-six thousand, one hundred sixty-one".