5161331811 has 16 divisors (see below), whose sum is σ = 7124198400. Its totient is φ = 3319847328.

The previous prime is 5161331809. The next prime is 5161331821. The reversal of 5161331811 is 1181331615.

It is not a de Polignac number, because 5161331811 - 2¹ = 5161331809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5161331821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104580 + ... + 145806.

It is an arithmetic number, because the mean of its divisors is an integer number (445262400).

Almost surely, 2^5161331811 is an apocalyptic number.

5161331811 is a deficient number, since it is larger than the sum of its proper divisors (1962866589).

5161331811 is a wasteful number, since it uses less digits than its factorization.

5161331811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42698.

The product of its digits is 2160, while the sum is 30.

The square root of 5161331811 is about 71842.4095573081. The cubic root of 5161331811 is about 1728.1731761374.

The spelling of 5161331811 in words is "five billion, one hundred sixty-one million, three hundred thirty-one thousand, eight hundred eleven".