27091740609 has 12 divisors (see below), whose sum is σ = 39335275876. Its totient is φ = 17967578112.

The previous prime is 27091740607. The next prime is 27091740623. The reversal of 27091740609 is 90604719072.

27091740609 is a `hidden beast` number, since 27 + 0 + 9 + 17 + 4 + 0 + 609 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15845774400 + 11245966209 = 125880^2 + 106047^2 .

It is not a de Polignac number, because 27091740609 - 2¹ = 27091740607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27091740607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7796692 + ... + 7800165.

Almost surely, 2^27091740609 is an apocalyptic number.

It is an amenable number.

27091740609 is a deficient number, since it is larger than the sum of its proper divisors (12243535267).

27091740609 is a wasteful number, since it uses less digits than its factorization.

27091740609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15597056 (or 15597053 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 27091740609 in words is "twenty-seven billion, ninety-one million, seven hundred forty thousand, six hundred nine".