5128663871 has 2 divisors, whose sum is σ = 5128663872. Its totient is φ = 5128663870.

The previous prime is 5128663867. The next prime is 5128663909. The reversal of 5128663871 is 1783668215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5128663871 - 2² = 5128663867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5128863871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2564331935 + 2564331936.

It is an arithmetic number, because the mean of its divisors is an integer number (2564331936).

Almost surely, 2^5128663871 is an apocalyptic number.

5128663871 is a deficient number, since it is larger than the sum of its proper divisors (1).

5128663871 is an equidigital number, since it uses as much as digits as its factorization.

5128663871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 5128663871 is about 71614.6903295686. The cubic root of 5128663871 is about 1724.5193783604.

The spelling of 5128663871 in words is "five billion, one hundred twenty-eight million, six hundred sixty-three thousand, eight hundred seventy-one".