27208218020 has 12 divisors (see below), whose sum is σ = 57137257884. Its totient is φ = 10883287200.

The previous prime is 27208218019. The next prime is 27208218031. The reversal of 27208218020 is 2081280272.

It can be written as a sum of positive squares in 2 ways, for example, as 3626930176 + 23581287844 = 60224^2 + 153562^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 680205431 + ... + 680205470.

It is an arithmetic number, because the mean of its divisors is an integer number (4761438157).

Almost surely, 2^27208218020 is an apocalyptic number.

27208218020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27208218020 is an abundant number, since it is smaller than the sum of its proper divisors (29929039864).

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

27208218020 is a wasteful number, since it uses less digits than its factorization.

27208218020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360410910 (or 1360410908 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

Adding to 27208218020 its reverse (2081280272), we get a palindrome (29289498292).

The spelling of 27208218020 in words is "twenty-seven billion, two hundred eight million, two hundred eighteen thousand, twenty".