5128666798336 has 81 divisors (see below), whose sum is σ = 10418096887051. Its totient is φ = 2519819320832.

The previous prime is 5128666798331. The next prime is 5128666798357. The reversal of 5128666798336 is 6338976668215.

The square root of 5128666798336 is 2264656.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5128666798331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2137834065 + ... + 2137836463.

Almost surely, 2^{5128666798336} is an apocalyptic number.

5128666798336 is the 2264656-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5128666798336

5128666798336 is an abundant number, since it is smaller than the sum of its proper divisors (5289430088715).

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

5128666798336 is an frugal number, since it uses more digits than its factorization.

5128666798336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932 (or 2460 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 70.

The spelling of 5128666798336 in words is "five trillion, one hundred twenty-eight billion, six hundred sixty-six million, seven hundred ninety-eight thousand, three hundred thirty-six".