5128663850 has 48 divisors (see below), whose sum is σ = 9653295096. Its totient is φ = 2027040000.

The previous prime is 5128663843. The next prime is 5128663867. The reversal of 5128663850 is 583668215.

It can be written as a sum of positive squares in 12 ways, for example, as 1446965521 + 3681698329 = 38039^2 + 60677^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4145432 + ... + 4146668.

Almost surely, 2^5128663850 is an apocalyptic number.

5128663850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5128663850 is a deficient number, since it is larger than the sum of its proper divisors (4524631246).

5128663850 is a wasteful number, since it uses less digits than its factorization.

5128663850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 5128663850 is about 71614.6901829506. The cubic root of 5128663850 is about 1724.5193760066.

The spelling of 5128663850 in words is "five billion, one hundred twenty-eight million, six hundred sixty-three thousand, eight hundred fifty".