5217718782 has 64 divisors (see below), whose sum is σ = 11128803840. Its totient is φ = 1626192000.

The previous prime is 5217718777. The next prime is 5217718811. The reversal of 5217718782 is 2878177125.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5307463 + ... + 5308445.

It is an arithmetic number, because the mean of its divisors is an integer number (173887560).

Almost surely, 2^5217718782 is an apocalyptic number.

5217718782 is an abundant number, since it is smaller than the sum of its proper divisors (5911085058).

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

5217718782 is a wasteful number, since it uses less digits than its factorization.

5217718782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569.

The product of its digits is 439040, while the sum is 48.

The square root of 5217718782 is about 72233.7786772920. The cubic root of 5217718782 is about 1734.4437621487.

The spelling of 5217718782 in words is "five billion, two hundred seventeen million, seven hundred eighteen thousand, seven hundred eighty-two".