5128128577 has 16 divisors (see below), whose sum is σ = 6058342080. Its totient is φ = 4279262400.

The previous prime is 5128128571. The next prime is 5128128589. The reversal of 5128128577 is 7758218215.

It is a cyclic number.

It is not a de Polignac number, because 5128128577 - 2³ = 5128128569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5128128571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74574 + ... + 125767.

It is an arithmetic number, because the mean of its divisors is an integer number (378646380).

Almost surely, 2^5128128577 is an apocalyptic number.

It is an amenable number.

5128128577 is a deficient number, since it is larger than the sum of its proper divisors (930213503).

5128128577 is a wasteful number, since it uses less digits than its factorization.

5128128577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200544.

The product of its digits is 313600, while the sum is 46.

The square root of 5128128577 is about 71610.9529122466. The cubic root of 5128128577 is about 1724.4593785230.

The spelling of 5128128577 in words is "five billion, one hundred twenty-eight million, one hundred twenty-eight thousand, five hundred seventy-seven".