27764681099 has 4 divisors (see below), whose sum is σ = 27767894736. Its totient is φ = 27761467464.

The previous prime is 27764681059. The next prime is 27764681117. The reversal of 27764681099 is 99018646772.

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 27764681099 - 2⁸ = 27764680843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27764681029) 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, 1593824 + ... + 1611149.

It is an arithmetic number, because the mean of its divisors is an integer number (6941973684).

Almost surely, 2^27764681099 is an apocalyptic number.

27764681099 is a deficient number, since it is larger than the sum of its proper divisors (3213637).

27764681099 is an equidigital number, since it uses as much as digits as its factorization.

27764681099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213636.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 27764681099 in words is "twenty-seven billion, seven hundred sixty-four million, six hundred eighty-one thousand, ninety-nine".