27670655717 has 4 divisors (see below), whose sum is σ = 27677203020. Its totient is φ = 27664108416.

The previous prime is 27670655711. The next prime is 27670655723. The reversal of 27670655717 is 71755607672.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (27670655711) and next prime (27670655723).

It can be written as a sum of positive squares in 2 ways, for example, as 26248536196 + 1422119521 = 162014^2 + 37711^2 .

It is a cyclic number.

It is not a de Polignac number, because 27670655717 - 2⁶ = 27670655653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27670655711) 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, 3267308 + ... + 3275765.

It is an arithmetic number, because the mean of its divisors is an integer number (6919300755).

Almost surely, 2^27670655717 is an apocalyptic number.

It is an amenable number.

27670655717 is a deficient number, since it is larger than the sum of its proper divisors (6547303).

27670655717 is an equidigital number, since it uses as much as digits as its factorization.

27670655717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547302.

The product of its (nonzero) digits is 4321800, while the sum is 53.

The spelling of 27670655717 in words is "twenty-seven billion, six hundred seventy million, six hundred fifty-five thousand, seven hundred seventeen".