27876806399 has 4 divisors (see below), whose sum is σ = 30021176136. Its totient is φ = 25732436664.

The previous prime is 27876806369. The next prime is 27876806413. The reversal of 27876806399 is 99360867872.

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 27876806399 - 2⁸ = 27876806143 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 (27876806369) 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, 1072184849 + ... + 1072184874.

It is an arithmetic number, because the mean of its divisors is an integer number (7505294034).

Almost surely, 2^27876806399 is an apocalyptic number.

27876806399 is a deficient number, since it is larger than the sum of its proper divisors (2144369737).

27876806399 is a wasteful number, since it uses less digits than its factorization.

27876806399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144369736.

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 27876806399 in words is "twenty-seven billion, eight hundred seventy-six million, eight hundred six thousand, three hundred ninety-nine".