27154727839 has 2 divisors, whose sum is σ = 27154727840. Its totient is φ = 27154727838.

The previous prime is 27154727837. The next prime is 27154727863. The reversal of 27154727839 is 93872745172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27154727839 - 2¹ = 27154727837 is a prime.

Together with 27154727837, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27154727839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27154727833) 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 as a sum of consecutive naturals, namely, 13577363919 + 13577363920.

It is an arithmetic number, because the mean of its divisors is an integer number (13577363920).

Almost surely, 2^27154727839 is an apocalyptic number.

27154727839 is a deficient number, since it is larger than the sum of its proper divisors (1).

27154727839 is an equidigital number, since it uses as much as digits as its factorization.

27154727839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5927040, while the sum is 55.

The spelling of 27154727839 in words is "twenty-seven billion, one hundred fifty-four million, seven hundred twenty-seven thousand, eight hundred thirty-nine".