27866386944 has 480 divisors, whose sum is σ = 94381619904. Its totient is φ = 7821066240.

The previous prime is 27866386939. The next prime is 27866386957. The reversal of 27866386944 is 44968366872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62903587 + ... + 62904029.

Almost surely, 2^27866386944 is an apocalyptic number.

27866386944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27866386944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47190809952).

27866386944 is an abundant number, since it is smaller than the sum of its proper divisors (66515232960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27866386944 is a wasteful number, since it uses less digits than its factorization.

27866386944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 549 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 63.

The spelling of 27866386944 in words is "twenty-seven billion, eight hundred sixty-six million, three hundred eighty-six thousand, nine hundred forty-four".