27364839091 has 4 divisors (see below), whose sum is σ = 28805093800. Its totient is φ = 25924584384.

The previous prime is 27364839079. The next prime is 27364839137. The reversal of 27364839091 is 19093846372.

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 27364839091 - 2¹¹ = 27364837043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27364839391) 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, 720127326 + ... + 720127363.

It is an arithmetic number, because the mean of its divisors is an integer number (7201273450).

Almost surely, 2^27364839091 is an apocalyptic number.

27364839091 is a deficient number, since it is larger than the sum of its proper divisors (1440254709).

27364839091 is a wasteful number, since it uses less digits than its factorization.

27364839091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440254708.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 27364839091 in words is "twenty-seven billion, three hundred sixty-four million, eight hundred thirty-nine thousand, ninety-one".