27424000309 has 4 divisors (see below), whose sum is σ = 27582520716. Its totient is φ = 27265479904.

The previous prime is 27424000259. The next prime is 27424000319. The reversal of 27424000309 is 90300042472.

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 22229915409 + 5194084900 = 149097^2 + 72070^2 .

It is a cyclic number.

It is not a de Polignac number, because 27424000309 - 2⁷ = 27424000181 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 (27424000319) 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, 79259944 + ... + 79260289.

It is an arithmetic number, because the mean of its divisors is an integer number (6895630179).

Almost surely, 2^27424000309 is an apocalyptic number.

It is an amenable number.

27424000309 is a deficient number, since it is larger than the sum of its proper divisors (158520407).

27424000309 is a wasteful number, since it uses less digits than its factorization.

27424000309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158520406.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 27424000309 in words is "twenty-seven billion, four hundred twenty-four million, three hundred nine", and thus it is an aban number.