5181696256 has 81 divisors (see below), whose sum is σ = 11396783433. Its totient is φ = 2349557760.

The previous prime is 5181696251. The next prime is 5181696259. The reversal of 5181696256 is 6526961815.

The square root of 5181696256 is 71984.

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

It can be written as a sum of positive squares in only one way, i.e., 4735641856 + 446054400 = 68816^2 + 21120^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5181696251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12668980 + ... + 12669388.

Almost surely, 2^5181696256 is an apocalyptic number.

5181696256 is the 71984-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5181696256

5181696256 is an abundant number, since it is smaller than the sum of its proper divisors (6215087177).

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

5181696256 is an frugal number, since it uses more digits than its factorization.

5181696256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 422 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

The cubic root of 5181696256 is about 1730.4430749480.

Multiplying 5181696256 by its sum of digits (49), we get a square (253903116544 = 503888²).

It can be divided in two parts, 518169 and 6256, that added together give a palindrome (524425).

The spelling of 5181696256 in words is "five billion, one hundred eighty-one million, six hundred ninety-six thousand, two hundred fifty-six".