27639368653868 has 12 divisors (see below), whose sum is σ = 48371692610472. Its totient is φ = 13818885050880.

The previous prime is 27639368653849. The next prime is 27639368653927. The reversal of 27639368653868 is 86835686393672.

It is a super-2 number, since 2×27639368653868² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27639368653792 and 27639368653801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199741205 + ... + 199879532.

It is an arithmetic number, because the mean of its divisors is an integer number (4030974384206).

Almost surely, 2^{27639368653868} is an apocalyptic number.

It is an amenable number.

27639368653868 is a deficient number, since it is larger than the sum of its proper divisors (20732323956604).

27639368653868 is a wasteful number, since it uses less digits than its factorization.

27639368653868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399638032 (or 399638030 counting only the distinct ones).

The product of its digits is 11287019520, while the sum is 80.

The spelling of 27639368653868 in words is "twenty-seven trillion, six hundred thirty-nine billion, three hundred sixty-eight million, six hundred fifty-three thousand, eight hundred sixty-eight".