5056116721 has 2 divisors, whose sum is σ = 5056116722. Its totient is φ = 5056116720.

The previous prime is 5056116719. The next prime is 5056116763. The reversal of 5056116721 is 1276116505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4708704400 + 347412321 = 68620^2 + 18639^2 .

It is a cyclic number.

It is not a de Polignac number, because 5056116721 - 2¹ = 5056116719 is a prime.

Together with 5056116719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5056116701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2528058360 + 2528058361.

It is an arithmetic number, because the mean of its divisors is an integer number (2528058361).

Almost surely, 2^5056116721 is an apocalyptic number.

It is an amenable number.

5056116721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5056116721 is an equidigital number, since it uses as much as digits as its factorization.

5056116721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 5056116721 is about 71106.3760924434. The cubic root of 5056116721 is about 1716.3493782823.

The spelling of 5056116721 in words is "five billion, fifty-six million, one hundred sixteen thousand, seven hundred twenty-one".