5218280664 has 64 divisors (see below), whose sum is σ = 13622169600. Its totient is φ = 1662667776.

The previous prime is 5218280659. The next prime is 5218280701. The reversal of 5218280664 is 4660828125.

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, 1252617 + ... + 1256775.

It is an arithmetic number, because the mean of its divisors is an integer number (212846400).

Almost surely, 2^5218280664 is an apocalyptic number.

It is an amenable number.

5218280664 is an abundant number, since it is smaller than the sum of its proper divisors (8403888936).

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

5218280664 is a wasteful number, since it uses less digits than its factorization.

5218280664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464 (or 6460 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 5218280664 is about 72237.6679025562. The cubic root of 5218280664 is about 1734.5060190973.

The spelling of 5218280664 in words is "five billion, two hundred eighteen million, two hundred eighty thousand, six hundred sixty-four".