27684866913894 has 96 divisors (see below), whose sum is σ = 63397032566400. Its totient is φ = 8707176466560.

The previous prime is 27684866913881. The next prime is 27684866913919. The reversal of 27684866913894 is 49831966848672.

27684866913894 is a `hidden beast` number, since 2 + 7 + 68 + 486 + 69 + 13 + 8 + 9 + 4 = 666.

It is a super-2 number, since 2×27684866913894² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125240437 + ... + 125461295.

It is an arithmetic number, because the mean of its divisors is an integer number (660385755900).

Almost surely, 2^{27684866913894} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27684866913894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31698516283200).

27684866913894 is an abundant number, since it is smaller than the sum of its proper divisors (35712165652506).

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

27684866913894 is a wasteful number, since it uses less digits than its factorization.

27684866913894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222370 (or 222367 counting only the distinct ones).

The product of its digits is 6019743744, while the sum is 81.

The spelling of 27684866913894 in words is "twenty-seven trillion, six hundred eighty-four billion, eight hundred sixty-six million, nine hundred thirteen thousand, eight hundred ninety-four".