27717245479 has 12 divisors (see below), whose sum is σ = 35173648008. Its totient is φ = 21597853200.

The previous prime is 27717245471. The next prime is 27717245489. The reversal of 27717245479 is 97454271772.

It is not a de Polignac number, because 27717245479 - 2³ = 27717245471 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 (27717245471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25711192 + ... + 25712269.

It is an arithmetic number, because the mean of its divisors is an integer number (2931137334).

Almost surely, 2^27717245479 is an apocalyptic number.

27717245479 is a deficient number, since it is larger than the sum of its proper divisors (7456402529).

27717245479 is a wasteful number, since it uses less digits than its factorization.

27717245479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51423486 (or 51423479 counting only the distinct ones).

The product of its digits is 6914880, while the sum is 55.

The spelling of 27717245479 in words is "twenty-seven billion, seven hundred seventeen million, two hundred forty-five thousand, four hundred seventy-nine".