27868401811 has 4 divisors (see below), whose sum is σ = 27870592000. Its totient is φ = 27866211624.

The previous prime is 27868401809. The next prime is 27868401823. The reversal of 27868401811 is 11810486872.

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 27868401811 - 2¹ = 27868401809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27868401611) 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, 1075896 + ... + 1101493.

It is an arithmetic number, because the mean of its divisors is an integer number (6967648000).

Almost surely, 2^27868401811 is an apocalyptic number.

27868401811 is a deficient number, since it is larger than the sum of its proper divisors (2190189).

27868401811 is a wasteful number, since it uses less digits than its factorization.

27868401811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190188.

The product of its (nonzero) digits is 172032, while the sum is 46.

The spelling of 27868401811 in words is "twenty-seven billion, eight hundred sixty-eight million, four hundred one thousand, eight hundred eleven".