27421327579 has 4 divisors (see below), whose sum is σ = 27426617280. Its totient is φ = 27416037880.

The previous prime is 27421327561. The next prime is 27421327601. The reversal of 27421327579 is 97572312472.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 27421327579 - 2¹⁵ = 27421294811 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27421327979) 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, 2637067 + ... + 2647444.

It is an arithmetic number, because the mean of its divisors is an integer number (6856654320).

Almost surely, 2^27421327579 is an apocalyptic number.

27421327579 is a deficient number, since it is larger than the sum of its proper divisors (5289701).

27421327579 is an equidigital number, since it uses as much as digits as its factorization.

27421327579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289700.

The product of its digits is 1481760, while the sum is 49.

The spelling of 27421327579 in words is "twenty-seven billion, four hundred twenty-one million, three hundred twenty-seven thousand, five hundred seventy-nine".