27005481077478 has 16 divisors (see below), whose sum is σ = 54012058148160. Its totient is φ = 9001644360296.

The previous prime is 27005481077459. The next prime is 27005481077527. The reversal of 27005481077478 is 87477018450072.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 45345888 + ... + 45937571.

It is an arithmetic number, because the mean of its divisors is an integer number (3375753634260).

Almost surely, 2^{27005481077478} is an apocalyptic number.

27005481077478 is an abundant number, since it is smaller than the sum of its proper divisors (27006577070682).

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

27005481077478 is a wasteful number, since it uses less digits than its factorization.

27005481077478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91332771.

The product of its (nonzero) digits is 24586240, while the sum is 60.

The spelling of 27005481077478 in words is "twenty-seven trillion, five billion, four hundred eighty-one million, seventy-seven thousand, four hundred seventy-eight".