27143680891 has 8 divisors (see below), whose sum is σ = 27236270720. Its totient is φ = 27051236928.

The previous prime is 27143680871. The next prime is 27143680903. The reversal of 27143680891 is 19808634172.

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 27143680891 - 2¹¹ = 27143678843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27143680871) 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, 343030 + ... + 414676.

It is an arithmetic number, because the mean of its divisors is an integer number (3404533840).

Almost surely, 2^27143680891 is an apocalyptic number.

27143680891 is a deficient number, since it is larger than the sum of its proper divisors (92589829).

27143680891 is an equidigital number, since it uses as much as digits as its factorization.

27143680891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72933.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 27143680891 in words is "twenty-seven billion, one hundred forty-three million, six hundred eighty thousand, eight hundred ninety-one".