27838862779 has 16 divisors (see below), whose sum is σ = 34648205760. Its totient is φ = 21778859520.

The previous prime is 27838862749. The next prime is 27838862813. The reversal of 27838862779 is 97726883872.

It is a cyclic number.

It is not a de Polignac number, because 27838862779 - 2³³ = 19248928187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27838862749) 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, 1710562 + ... + 1726759.

It is an arithmetic number, because the mean of its divisors is an integer number (2165512860).

Almost surely, 2^27838862779 is an apocalyptic number.

27838862779 is a deficient number, since it is larger than the sum of its proper divisors (6809342981).

27838862779 is a wasteful number, since it uses less digits than its factorization.

27838862779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437430.

The product of its digits is 113799168, while the sum is 67.

The spelling of 27838862779 in words is "twenty-seven billion, eight hundred thirty-eight million, eight hundred sixty-two thousand, seven hundred seventy-nine".