42727686894 has 64 divisors (see below), whose sum is σ = 99999590400. Its totient is φ = 13485963456.

The previous prime is 42727686853. The next prime is 42727686907. The reversal of 42727686894 is 49868672724.

42727686894 is a `hidden beast` number, since 427 + 2 + 7 + 68 + 68 + 94 = 666.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2189002 + ... + 2208434.

It is an arithmetic number, because the mean of its divisors is an integer number (1562493600).

Almost surely, 2^42727686894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42727686894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49999795200).

42727686894 is an abundant number, since it is smaller than the sum of its proper divisors (57271903506).

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

42727686894 is a wasteful number, since it uses less digits than its factorization.

42727686894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21606 (or 21600 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The spelling of 42727686894 in words is "forty-two billion, seven hundred twenty-seven million, six hundred eighty-six thousand, eight hundred ninety-four".