27778982943 has 16 divisors (see below), whose sum is σ = 37656777312. Its totient is φ = 18210432000.

The previous prime is 27778982911. The next prime is 27778982969. The reversal of 27778982943 is 34928987772.

It is not a de Polignac number, because 27778982943 - 2⁵ = 27778982911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27778982993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668083 + ... + 708443.

It is an arithmetic number, because the mean of its divisors is an integer number (2353548582).

Almost surely, 2^27778982943 is an apocalyptic number.

27778982943 is a deficient number, since it is larger than the sum of its proper divisors (9877794369).

27778982943 is a wasteful number, since it uses less digits than its factorization.

27778982943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44186.

The product of its digits is 85349376, while the sum is 66.

The spelling of 27778982943 in words is "twenty-seven billion, seven hundred seventy-eight million, nine hundred eighty-two thousand, nine hundred forty-three".