27159138678 has 32 divisors (see below), whose sum is σ = 62084381184. Its totient is φ = 7758960192.

The previous prime is 27159138673. The next prime is 27159138683. The reversal of 27159138678 is 87683195172.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27159138673) and next prime (27159138683).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27159138673) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 473826 + ... + 528042.

It is an arithmetic number, because the mean of its divisors is an integer number (1940136912).

Almost surely, 2^27159138678 is an apocalyptic number.

27159138678 is an abundant number, since it is smaller than the sum of its proper divisors (34925242506).

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

27159138678 is a wasteful number, since it uses less digits than its factorization.

27159138678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66156.

The product of its digits is 5080320, while the sum is 57.

The spelling of 27159138678 in words is "twenty-seven billion, one hundred fifty-nine million, one hundred thirty-eight thousand, six hundred seventy-eight".