27078580687 has 4 divisors (see below), whose sum is σ = 27273390760. Its totient is φ = 26883770616.

The previous prime is 27078580681. The next prime is 27078580723. The reversal of 27078580687 is 78608587072.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27078580687 - 2¹⁵ = 27078547919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27078580681) by changing a digit.

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, 97404828 + ... + 97405105.

It is an arithmetic number, because the mean of its divisors is an integer number (6818347690).

Almost surely, 2^27078580687 is an apocalyptic number.

27078580687 is a deficient number, since it is larger than the sum of its proper divisors (194810073).

27078580687 is a wasteful number, since it uses less digits than its factorization.

27078580687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194810072.

The product of its (nonzero) digits is 10536960, while the sum is 58.

The spelling of 27078580687 in words is "twenty-seven billion, seventy-eight million, five hundred eighty thousand, six hundred eighty-seven".