27242804789 has 4 divisors (see below), whose sum is σ = 28676636640. Its totient is φ = 25808972940.

The previous prime is 27242804783. The next prime is 27242804803. The reversal of 27242804789 is 98740824272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27242804789 - 2¹² = 27242800693 is a prime.

It is a super-2 number, since 2×27242804789² (a number of 22 digits) contains 22 as substring.

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 27242804789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27242804783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716915897 + ... + 716915934.

It is an arithmetic number, because the mean of its divisors is an integer number (7169159160).

Almost surely, 2^27242804789 is an apocalyptic number.

It is an amenable number.

27242804789 is a deficient number, since it is larger than the sum of its proper divisors (1433831851).

27242804789 is a wasteful number, since it uses less digits than its factorization.

27242804789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433831850.

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 27242804789 in words is "twenty-seven billion, two hundred forty-two million, eight hundred four thousand, seven hundred eighty-nine".