27757548017 has 2 divisors, whose sum is σ = 27757548018. Its totient is φ = 27757548016.

The previous prime is 27757547989. The next prime is 27757548019. The reversal of 27757548017 is 71084575772.

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., 21157447936 + 6600100081 = 145456^2 + 81241^2 .

It is a cyclic number.

It is not a de Polignac number, because 27757548017 - 2¹⁶ = 27757482481 is a prime.

Together with 27757548019, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27757548017.

It is not a weakly prime, because it can be changed into another prime (27757548019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13878774008 + 13878774009.

It is an arithmetic number, because the mean of its divisors is an integer number (13878774009).

Almost surely, 2^27757548017 is an apocalyptic number.

It is an amenable number.

27757548017 is a deficient number, since it is larger than the sum of its proper divisors (1).

27757548017 is an equidigital number, since it uses as much as digits as its factorization.

27757548017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3841600, while the sum is 53.

The spelling of 27757548017 in words is "twenty-seven billion, seven hundred fifty-seven million, five hundred forty-eight thousand, seventeen".