27308966881 has 4 divisors (see below), whose sum is σ = 31210247872. Its totient is φ = 23407685892.

The previous prime is 27308966869. The next prime is 27308966891. The reversal of 27308966881 is 18866980372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27308966881 - 2¹³ = 27308958689 is a prime.

It is a super-2 number, since 2×27308966881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27308966891) 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, 1950640485 + ... + 1950640498.

It is an arithmetic number, because the mean of its divisors is an integer number (7802561968).

Almost surely, 2^27308966881 is an apocalyptic number.

It is an amenable number.

27308966881 is a deficient number, since it is larger than the sum of its proper divisors (3901280991).

27308966881 is an equidigital number, since it uses as much as digits as its factorization.

27308966881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901280990.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 27308966881 in words is "twenty-seven billion, three hundred eight million, nine hundred sixty-six thousand, eight hundred eighty-one".