27968889367 has 4 divisors (see below), whose sum is σ = 28008338440. Its totient is φ = 27929440296.

The previous prime is 27968889359. The next prime is 27968889401. The reversal of 27968889367 is 76398886972.

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 27968889367 - 2³ = 27968889359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27968889367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27968889307) 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, 19723473 + ... + 19724890.

It is an arithmetic number, because the mean of its divisors is an integer number (7002084610).

Almost surely, 2^27968889367 is an apocalyptic number.

27968889367 is a deficient number, since it is larger than the sum of its proper divisors (39449073).

27968889367 is an equidigital number, since it uses as much as digits as its factorization.

27968889367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39449072.

The product of its digits is 438939648, while the sum is 73.

It can be divided in two parts, 27968 and 889367, that added together give a triangular number (917335 = T₁₃₅₄).

The spelling of 27968889367 in words is "twenty-seven billion, nine hundred sixty-eight million, eight hundred eighty-nine thousand, three hundred sixty-seven".