27291144717 has 12 divisors (see below), whose sum is σ = 40692173184. Its totient is φ = 17607189960.

The previous prime is 27291144709. The next prime is 27291144731. The reversal of 27291144717 is 71744119272.

It is not a de Polignac number, because 27291144717 - 2³ = 27291144709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27291144767) 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, 48908583 + ... + 48909140.

It is an arithmetic number, because the mean of its divisors is an integer number (3391014432).

Almost surely, 2^27291144717 is an apocalyptic number.

It is an amenable number.

27291144717 is a deficient number, since it is larger than the sum of its proper divisors (13401028467).

27291144717 is a wasteful number, since it uses less digits than its factorization.

27291144717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97817760 (or 97817757 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The spelling of 27291144717 in words is "twenty-seven billion, two hundred ninety-one million, one hundred forty-four thousand, seven hundred seventeen".