5128663851 has 16 divisors (see below), whose sum is σ = 7599513600. Its totient is φ = 3418437384.

The previous prime is 5128663843. The next prime is 5128663867. The reversal of 5128663851 is 1583668215.

5128663851 is a `hidden beast` number, since 5 + 1 + 2 + 8 + 6 + 638 + 5 + 1 = 666.

It is not a de Polignac number, because 5128663851 - 2³ = 5128663843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5128663797 and 5128663806.

It is not an unprimeable number, because it can be changed into a prime (5128663871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148510 + ... + 179756.

It is an arithmetic number, because the mean of its divisors is an integer number (474969600).

Almost surely, 2^5128663851 is an apocalyptic number.

5128663851 is a deficient number, since it is larger than the sum of its proper divisors (2470849749).

5128663851 is a wasteful number, since it uses less digits than its factorization.

5128663851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37335 (or 37329 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 5128663851 is about 71614.6901899324. The cubic root of 5128663851 is about 1724.5193761187.

The spelling of 5128663851 in words is "five billion, one hundred twenty-eight million, six hundred sixty-three thousand, eight hundred fifty-one".