5281288064 has 128 divisors (see below), whose sum is σ = 11695320000. Its totient is φ = 2360033280.

The previous prime is 5281288021. The next prime is 5281288087. The reversal of 5281288064 is 4608821825.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×5281288064² = 55784007229897736192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13576382 + ... + 13576770.

Almost surely, 2^5281288064 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 5281288064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5847660000).

5281288064 is an abundant number, since it is smaller than the sum of its proper divisors (6414031936).

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

5281288064 is a wasteful number, since it uses less digits than its factorization.

5281288064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 5281288064 is about 72672.4711565528. The cubic root of 5281288064 is about 1741.4591257391.

The spelling of 5281288064 in words is "five billion, two hundred eighty-one million, two hundred eighty-eight thousand, sixty-four".