27982387966 has 8 divisors (see below), whose sum is σ = 45202319064. Its totient is φ = 12914948280.

The previous prime is 27982387963. The next prime is 27982387969. The reversal of 27982387966 is 66978328972.

It is an interprime number because it is at equal distance from previous prime (27982387963) and next prime (27982387969).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27982387963) 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, 538122820 + ... + 538122871.

It is an arithmetic number, because the mean of its divisors is an integer number (5650289883).

Almost surely, 2^27982387966 is an apocalyptic number.

27982387966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27982387966 is a deficient number, since it is larger than the sum of its proper divisors (17219931098).

27982387966 is a wasteful number, since it uses less digits than its factorization.

27982387966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076245706.

The product of its digits is 109734912, while the sum is 67.

The spelling of 27982387966 in words is "twenty-seven billion, nine hundred eighty-two million, three hundred eighty-seven thousand, nine hundred sixty-six".