5128550136 has 96 divisors (see below), whose sum is σ = 14242962240. Its totient is φ = 1666351104.

The previous prime is 5128550099. The next prime is 5128550159. The reversal of 5128550136 is 6310558215.

It is a happy number.

5128550136 is a `hidden beast` number, since 51 + 28 + 550 + 1 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 5128550136.

It is a congruent number.

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, 866740 + ... + 872636.

It is an arithmetic number, because the mean of its divisors is an integer number (148364190).

Almost surely, 2^5128550136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5128550136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7121481120).

5128550136 is an abundant number, since it is smaller than the sum of its proper divisors (9114412104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5128550136 is a wasteful number, since it uses less digits than its factorization.

5128550136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213 (or 6206 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 5128550136 is about 71613.8962492616. The cubic root of 5128550136 is about 1724.5066304227.

The spelling of 5128550136 in words is "five billion, one hundred twenty-eight million, five hundred fifty thousand, one hundred thirty-six".