27807836827 has 4 divisors (see below), whose sum is σ = 27820827216. Its totient is φ = 27794846440.

The previous prime is 27807836743. The next prime is 27807836863. The reversal of 27807836827 is 72863870872.

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 27807836827 - 2⁷ = 27807836699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27807836867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6491983 + ... + 6496264.

It is an arithmetic number, because the mean of its divisors is an integer number (6955206804).

Almost surely, 2^27807836827 is an apocalyptic number.

27807836827 is a deficient number, since it is larger than the sum of its proper divisors (12990389).

27807836827 is a wasteful number, since it uses less digits than its factorization.

27807836827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12990388.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 27807836827 in words is "twenty-seven billion, eight hundred seven million, eight hundred thirty-six thousand, eight hundred twenty-seven".