27866386946 has 16 divisors (see below), whose sum is σ = 41912229624. Its totient is φ = 13895691264.

The previous prime is 27866386939. The next prime is 27866386957. The reversal of 27866386946 is 64968366872.

It can be written as a sum of positive squares in 4 ways, for example, as 20631013225 + 7235373721 = 143635^2 + 85061^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250276 + ... + 1272368.

Almost surely, 2^27866386946 is an apocalyptic number.

27866386946 is a deficient number, since it is larger than the sum of its proper divisors (14045842678).

27866386946 is a wasteful number, since it uses less digits than its factorization.

27866386946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23765.

The product of its digits is 125411328, while the sum is 65.

The spelling of 27866386946 in words is "twenty-seven billion, eight hundred sixty-six million, three hundred eighty-six thousand, nine hundred forty-six".