27665801622089 has 16 divisors (see below), whose sum is σ = 29504159798400. Its totient is φ = 25851259425024.

The previous prime is 27665801622061. The next prime is 27665801622103. The reversal of 27665801622089 is 98022610856672.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27665801622089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27665801622889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3523979 + ... + 8231040.

It is an arithmetic number, because the mean of its divisors is an integer number (1844009987400).

Almost surely, 2^{27665801622089} is an apocalyptic number.

It is an amenable number.

27665801622089 is a deficient number, since it is larger than the sum of its proper divisors (1838358176311).

27665801622089 is a wasteful number, since it uses less digits than its factorization.

27665801622089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11756032.

The product of its (nonzero) digits is 34836480, while the sum is 62.

The spelling of 27665801622089 in words is "twenty-seven trillion, six hundred sixty-five billion, eight hundred one million, six hundred twenty-two thousand, eighty-nine".