5278173218 has 16 divisors (see below), whose sum is σ = 7975598904. Its totient is φ = 2619694080.

The previous prime is 5278173211. The next prime is 5278173233. The reversal of 5278173218 is 8123718725.

It can be written as a sum of positive squares in 4 ways, for example, as 3183554929 + 2094618289 = 56423^2 + 45767^2 .

It is a super-2 number, since 2×5278173218² = 55718225038424951048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5278173211) 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 7 ways as a sum of consecutive naturals, for example, 188546 + ... + 214722.

Almost surely, 2^5278173218 is an apocalyptic number.

5278173218 is a deficient number, since it is larger than the sum of its proper divisors (2697425686).

5278173218 is a wasteful number, since it uses less digits than its factorization.

5278173218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26917.

The product of its digits is 188160, while the sum is 44.

The square root of 5278173218 is about 72651.0372809639. The cubic root of 5278173218 is about 1741.1166938874.

The spelling of 5278173218 in words is "five billion, two hundred seventy-eight million, one hundred seventy-three thousand, two hundred eighteen".