27768370387 has 8 divisors (see below), whose sum is σ = 28051272704. Its totient is φ = 27485724168.

The previous prime is 27768370379. The next prime is 27768370393. The reversal of 27768370387 is 78307386772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27768370387 - 2³ = 27768370379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27768370397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157828 + ... + 283630.

It is an arithmetic number, because the mean of its divisors is an integer number (3506409088).

Almost surely, 2^27768370387 is an apocalyptic number.

27768370387 is a deficient number, since it is larger than the sum of its proper divisors (282902317).

27768370387 is a wasteful number, since it uses less digits than its factorization.

27768370387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128049.

The product of its (nonzero) digits is 16595712, while the sum is 58.

The spelling of 27768370387 in words is "twenty-seven billion, seven hundred sixty-eight million, three hundred seventy thousand, three hundred eighty-seven".