5219866881 has 20 divisors (see below), whose sum is σ = 8256262212. Its totient is φ = 3275209728.

The previous prime is 5219866843. The next prime is 5219866891. The reversal of 5219866881 is 1886689125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2702336256 + 2517530625 = 51984^2 + 50175^2 .

It is not a de Polignac number, because 5219866881 - 2⁹ = 5219866369 is a prime.

It is a super-3 number, since 3×5219866881³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5219866811) 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 19 ways as a sum of consecutive naturals, for example, 1894000 + ... + 1896753.

Almost surely, 2^5219866881 is an apocalyptic number.

5219866881 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5219866881 is a deficient number, since it is larger than the sum of its proper divisors (3036395331).

5219866881 is a wasteful number, since it uses less digits than its factorization.

5219866881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790782 (or 3790773 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 5219866881 is about 72248.6462226110. The cubic root of 5219866881 is about 1734.6817490222.

The spelling of 5219866881 in words is "five billion, two hundred nineteen million, eight hundred sixty-six thousand, eight hundred eighty-one".