27003850561 has 4 divisors (see below), whose sum is σ = 27006696324. Its totient is φ = 27001004800.

The previous prime is 27003850537. The next prime is 27003850589. The reversal of 27003850561 is 16505830072.

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 9627338161 + 17376512400 = 98119^2 + 131820^2 .

It is a cyclic number.

It is not a de Polignac number, because 27003850561 - 2³³ = 18413915969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27003850561.

It is not an unprimeable number, because it can be changed into a prime (27003050561) 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, 1408600 + ... + 1427641.

It is an arithmetic number, because the mean of its divisors is an integer number (6751674081).

Almost surely, 2^27003850561 is an apocalyptic number.

It is an amenable number.

27003850561 is a deficient number, since it is larger than the sum of its proper divisors (2845763).

27003850561 is an equidigital number, since it uses as much as digits as its factorization.

27003850561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845762.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 27003850561 in words is "twenty-seven billion, three million, eight hundred fifty thousand, five hundred sixty-one".