5128161280 has 192 divisors, whose sum is σ = 13692369600. Its totient is φ = 1827471360.

The previous prime is 5128161253. The next prime is 5128161281. The reversal of 5128161280 is 821618215.

It is a super-2 number, since 2×5128161280² = 52596076227382476800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5128161281) 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, 5969491 + ... + 5970349.

It is an arithmetic number, because the mean of its divisors is an integer number (71314425).

Almost surely, 2^5128161280 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 5128161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6846184800).

5128161280 is an abundant number, since it is smaller than the sum of its proper divisors (8564208320).

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

5128161280 is a wasteful number, since it uses less digits than its factorization.

5128161280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 5128161280 is about 71611.1812498579. The cubic root of 5128161280 is about 1724.4630442446.

Adding to 5128161280 its reverse (821618215), we get a palindrome (5949779495).

The spelling of 5128161280 in words is "five billion, one hundred twenty-eight million, one hundred sixty-one thousand, two hundred eighty".