27809916385 has 8 divisors (see below), whose sum is σ = 33937525440. Its totient is φ = 21870849264.

The previous prime is 27809916353. The next prime is 27809916439. The reversal of 27809916385 is 58361990872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27809916385 - 2⁵ = 27809916353 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47135157 + ... + 47135746.

It is an arithmetic number, because the mean of its divisors is an integer number (4242190680).

Almost surely, 2^27809916385 is an apocalyptic number.

It is an amenable number.

27809916385 is a deficient number, since it is larger than the sum of its proper divisors (6127609055).

27809916385 is an equidigital number, since it uses as much as digits as its factorization.

27809916385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94270967.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 27809916385 in words is "twenty-seven billion, eight hundred nine million, nine hundred sixteen thousand, three hundred eighty-five".