27846538755509 has 4 divisors (see below), whose sum is σ = 27848960837004. Its totient is φ = 27844116674016.

The previous prime is 27846538755481. The next prime is 27846538755527. The reversal of 27846538755509 is 90555783564872.

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 21573442457284 + 6273096298225 = 4644722^2 + 2504615^2 .

It is a cyclic number.

It is not a de Polignac number, because 27846538755509 - 2¹⁶ = 27846538689973 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 (27846538755559) 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, 1211023502 + ... + 1211046495.

It is an arithmetic number, because the mean of its divisors is an integer number (6962240209251).

Almost surely, 2^{27846538755509} is an apocalyptic number.

It is an amenable number.

27846538755509 is a deficient number, since it is larger than the sum of its proper divisors (2422081495).

27846538755509 is a wasteful number, since it uses less digits than its factorization.

27846538755509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422081494.

The product of its (nonzero) digits is 2540160000, while the sum is 74.

The spelling of 27846538755509 in words is "twenty-seven trillion, eight hundred forty-six billion, five hundred thirty-eight million, seven hundred fifty-five thousand, five hundred nine".