27664441793 has 2 divisors, whose sum is σ = 27664441794. Its totient is φ = 27664441792.

The previous prime is 27664441759. The next prime is 27664441811. The reversal of 27664441793 is 39714446672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27162995344 + 501446449 = 164812^2 + 22393^2 .

It is a cyclic number.

It is not a de Polignac number, because 27664441793 - 2³² = 23369474497 is a prime.

It is not a weakly prime, because it can be changed into another prime (27664444793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13832220896 + 13832220897.

It is an arithmetic number, because the mean of its divisors is an integer number (13832220897).

Almost surely, 2^27664441793 is an apocalyptic number.

It is an amenable number.

27664441793 is a deficient number, since it is larger than the sum of its proper divisors (1).

27664441793 is an equidigital number, since it uses as much as digits as its factorization.

27664441793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 53.

The spelling of 27664441793 in words is "twenty-seven billion, six hundred sixty-four million, four hundred forty-one thousand, seven hundred ninety-three".