5161812555 has 64 divisors (see below), whose sum is σ = 8869985280. Its totient is φ = 2555712000.

The previous prime is 5161812533. The next prime is 5161812569. The reversal of 5161812555 is 5552181615.

It is not a de Polignac number, because 5161812555 - 2⁷ = 5161812427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2963985 + ... + 2965725.

It is an arithmetic number, because the mean of its divisors is an integer number (138593520).

Almost surely, 2^5161812555 is an apocalyptic number.

5161812555 is a deficient number, since it is larger than the sum of its proper divisors (3708172725).

5161812555 is a wasteful number, since it uses less digits than its factorization.

5161812555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its digits is 60000, while the sum is 39.

The square root of 5161812555 is about 71845.7553025925. The cubic root of 5161812555 is about 1728.2268304475.

The spelling of 5161812555 in words is "five billion, one hundred sixty-one million, eight hundred twelve thousand, five hundred fifty-five".