27768013439 has 16 divisors (see below), whose sum is σ = 29352960000. Its totient is φ = 26233796160.

The previous prime is 27768013421. The next prime is 27768013447. The reversal of 27768013439 is 93431086772.

It is a cyclic number.

It is not a de Polignac number, because 27768013439 - 2²⁸ = 27499577983 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 (27768013409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154262 + ... + 281660.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560000).

Almost surely, 2^27768013439 is an apocalyptic number.

27768013439 is a deficient number, since it is larger than the sum of its proper divisors (1584946561).

27768013439 is a wasteful number, since it uses less digits than its factorization.

27768013439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127598.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 27768013439 in words is "twenty-seven billion, seven hundred sixty-eight million, thirteen thousand, four hundred thirty-nine".