27252978439 has 2 divisors, whose sum is σ = 27252978440. Its totient is φ = 27252978438.

The previous prime is 27252978437. The next prime is 27252978503. The reversal of 27252978439 is 93487925272.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27252978439 - 2¹ = 27252978437 is a prime.

Together with 27252978437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27252978437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13626489219 + 13626489220.

It is an arithmetic number, because the mean of its divisors is an integer number (13626489220).

Almost surely, 2^27252978439 is an apocalyptic number.

27252978439 is a deficient number, since it is larger than the sum of its proper divisors (1).

27252978439 is an equidigital number, since it uses as much as digits as its factorization.

27252978439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 58.

The spelling of 27252978439 in words is "twenty-seven billion, two hundred fifty-two million, nine hundred seventy-eight thousand, four hundred thirty-nine".