27818870345 has 8 divisors (see below), whose sum is σ = 38151593664. Its totient is φ = 19075796784.

The previous prime is 27818870341. The next prime is 27818870347. The reversal of 27818870345 is 54307881872.

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 27818870345 - 2² = 27818870341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27818870341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397412399 + ... + 397412468.

It is an arithmetic number, because the mean of its divisors is an integer number (4768949208).

Almost surely, 2^27818870345 is an apocalyptic number.

It is an amenable number.

27818870345 is a deficient number, since it is larger than the sum of its proper divisors (10332723319).

27818870345 is an equidigital number, since it uses as much as digits as its factorization.

27818870345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794824879.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 27818870345 in words is "twenty-seven billion, eight hundred eighteen million, eight hundred seventy thousand, three hundred forty-five".