5218688872 has 8 divisors (see below), whose sum is σ = 9785041650. Its totient is φ = 2609344432.

The previous prime is 5218688861. The next prime is 5218688873. The reversal of 5218688872 is 2788868125.

It can be written as a sum of positive squares in only one way, i.e., 5206199716 + 12489156 = 72154^2 + 3534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (5218688873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326168047 + ... + 326168062.

Almost surely, 2^5218688872 is an apocalyptic number.

It is an amenable number.

5218688872 is a deficient number, since it is larger than the sum of its proper divisors (4566352778).

5218688872 is a wasteful number, since it uses less digits than its factorization.

5218688872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652336115 (or 652336111 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 55.

The square root of 5218688872 is about 72240.4932984265. The cubic root of 5218688872 is about 1734.5512460483.

The spelling of 5218688872 in words is "five billion, two hundred eighteen million, six hundred eighty-eight thousand, eight hundred seventy-two".