27778335864983 has 4 divisors (see below), whose sum is σ = 30303639125448. Its totient is φ = 25253032604520.

The previous prime is 27778335864953. The next prime is 27778335864997. The reversal of 27778335864983 is 38946853387772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27778335864983 - 2¹⁶ = 27778335799447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27778335864898 and 27778335864907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27778335864953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262651630216 + ... + 1262651630237.

It is an arithmetic number, because the mean of its divisors is an integer number (7575909781362).

Almost surely, 2^{27778335864983} is an apocalyptic number.

27778335864983 is a deficient number, since it is larger than the sum of its proper divisors (2525303260465).

27778335864983 is a wasteful number, since it uses less digits than its factorization.

27778335864983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525303260464.

The product of its digits is 10241925120, while the sum is 80.

The spelling of 27778335864983 in words is "twenty-seven trillion, seven hundred seventy-eight billion, three hundred thirty-five million, eight hundred sixty-four thousand, nine hundred eighty-three".