5156419561 has 2 divisors, whose sum is σ = 5156419562. Its totient is φ = 5156419560.

The previous prime is 5156419553. The next prime is 5156419589. The reversal of 5156419561 is 1659146515.

5156419561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5144475625 + 11943936 = 71725^2 + 3456^2 .

It is a cyclic number.

It is not a de Polignac number, because 5156419561 - 2³ = 5156419553 is a prime.

It is not a weakly prime, because it can be changed into another prime (5156419591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578209780 + 2578209781.

It is an arithmetic number, because the mean of its divisors is an integer number (2578209781).

Almost surely, 2^5156419561 is an apocalyptic number.

It is an amenable number.

5156419561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5156419561 is an equidigital number, since it uses as much as digits as its factorization.

5156419561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 43.

The square root of 5156419561 is about 71808.2137432759. The cubic root of 5156419561 is about 1727.6247444794.

The spelling of 5156419561 in words is "five billion, one hundred fifty-six million, four hundred nineteen thousand, five hundred sixty-one".