27240981589 has 4 divisors (see below), whose sum is σ = 27510694380. Its totient is φ = 26971268800.

The previous prime is 27240981553. The next prime is 27240981613. The reversal of 27240981589 is 98518904272.

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 11318832100 + 15922149489 = 106390^2 + 126183^2 .

It is a cyclic number.

It is not a de Polignac number, because 27240981589 - 2⁷ = 27240981461 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 (27240981689) 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 3 ways as a sum of consecutive naturals, for example, 134856244 + ... + 134856445.

It is an arithmetic number, because the mean of its divisors is an integer number (6877673595).

Almost surely, 2^27240981589 is an apocalyptic number.

It is an amenable number.

27240981589 is a deficient number, since it is larger than the sum of its proper divisors (269712791).

27240981589 is a wasteful number, since it uses less digits than its factorization.

27240981589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269712790.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 27240981589 in words is "twenty-seven billion, two hundred forty million, nine hundred eighty-one thousand, five hundred eighty-nine".