5045977681 has 2 divisors, whose sum is σ = 5045977682. Its totient is φ = 5045977680.

The previous prime is 5045977667. The next prime is 5045977691. The reversal of 5045977681 is 1867795405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4853212225 + 192765456 = 69665^2 + 13884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5045977681 is a prime.

It is a super-2 number, since 2×5045977681² = 50923781514300275522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5045977661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2522988840 + 2522988841.

It is an arithmetic number, because the mean of its divisors is an integer number (2522988841).

Almost surely, 2^5045977681 is an apocalyptic number.

It is an amenable number.

5045977681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5045977681 is an equidigital number, since it uses as much as digits as its factorization.

5045977681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The square root of 5045977681 is about 71035.0454423730. The cubic root of 5045977681 is about 1715.2013443849.

The spelling of 5045977681 in words is "five billion, forty-five million, nine hundred seventy-seven thousand, six hundred eighty-one".