27842853512017 has 4 divisors (see below), whose sum is σ = 27862614232740. Its totient is φ = 27823092791296.

The previous prime is 27842853511969. The next prime is 27842853512081. The reversal of 27842853512017 is 71021535824872.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6569948102481 + 21272905409536 = 2563191^2 + 4612256^2 .

It is a cyclic number.

It is not a de Polignac number, because 27842853512017 - 2¹⁵ = 27842853479249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27842853512087) 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, 9880358248 + ... + 9880361065.

It is an arithmetic number, because the mean of its divisors is an integer number (6965653558185).

Almost surely, 2^{27842853512017} is an apocalyptic number.

It is an amenable number.

27842853512017 is a deficient number, since it is larger than the sum of its proper divisors (19760720723).

27842853512017 is a wasteful number, since it uses less digits than its factorization.

27842853512017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19760720722.

The product of its (nonzero) digits is 7526400, while the sum is 55.

The spelling of 27842853512017 in words is "twenty-seven trillion, eight hundred forty-two billion, eight hundred fifty-three million, five hundred twelve thousand, seventeen".