27866056873 has 8 divisors (see below), whose sum is σ = 28135395776. Its totient is φ = 27597834000.

The previous prime is 27866056861. The next prime is 27866056921. The reversal of 27866056873 is 37865066872.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27866056873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27866057873) 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, 228786 + ... + 328747.

It is an arithmetic number, because the mean of its divisors is an integer number (3516924472).

Almost surely, 2^27866056873 is an apocalyptic number.

It is an amenable number.

27866056873 is a deficient number, since it is larger than the sum of its proper divisors (269338903).

27866056873 is a wasteful number, since it uses less digits than its factorization.

27866056873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558015.

The product of its (nonzero) digits is 20321280, while the sum is 58.

Subtracting 27866056873 from its reverse (37865066872), we obtain a palindrome (9999009999).

It can be divided in two parts, 278660 and 56873, that added together give a palindrome (335533).

The spelling of 27866056873 in words is "twenty-seven billion, eight hundred sixty-six million, fifty-six thousand, eight hundred seventy-three".