27664371627 has 16 divisors (see below), whose sum is σ = 37446849792. Its totient is φ = 18162980640.

The previous prime is 27664371617. The next prime is 27664371649. The reversal of 27664371627 is 72617346672.

It is not a de Polignac number, because 27664371627 - 2⁷ = 27664371499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27664371627.

It is not an unprimeable number, because it can be changed into a prime (27664371607) 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, 121593 + ... + 264789.

It is an arithmetic number, because the mean of its divisors is an integer number (2340428112).

Almost surely, 2^27664371627 is an apocalyptic number.

27664371627 is a deficient number, since it is larger than the sum of its proper divisors (9782478165).

27664371627 is a wasteful number, since it uses less digits than its factorization.

27664371627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144178.

The product of its digits is 3556224, while the sum is 51.

The spelling of 27664371627 in words is "twenty-seven billion, six hundred sixty-four million, three hundred seventy-one thousand, six hundred twenty-seven".