5161313761 has 4 divisors (see below), whose sum is σ = 5245925524. Its totient is φ = 5076702000.

The previous prime is 5161313743. The next prime is 5161313791. The reversal of 5161313761 is 1673131615.

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 1180334736 + 3980979025 = 34356^2 + 63095^2 .

It is a cyclic number.

It is not a de Polignac number, because 5161313761 - 2¹¹ = 5161311713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5161313791) 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 3 ways as a sum of consecutive naturals, for example, 42305790 + ... + 42305911.

It is an arithmetic number, because the mean of its divisors is an integer number (1311481381).

Almost surely, 2^5161313761 is an apocalyptic number.

It is an amenable number.

5161313761 is a deficient number, since it is larger than the sum of its proper divisors (84611763).

5161313761 is an equidigital number, since it uses as much as digits as its factorization.

5161313761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84611762.

The product of its digits is 11340, while the sum is 34.

The square root of 5161313761 is about 71842.2839350198. The cubic root of 5161313761 is about 1728.1711615694.

The spelling of 5161313761 in words is "five billion, one hundred sixty-one million, three hundred thirteen thousand, seven hundred sixty-one".