27971884752 has 80 divisors (see below), whose sum is σ = 82622128512. Its totient is φ = 7988244480.

The previous prime is 27971884741. The next prime is 27971884757. The reversal of 27971884752 is 25748817972.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27971884757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748168 + ... + 784664.

Almost surely, 2^27971884752 is an apocalyptic number.

It is an amenable number.

27971884752 is an abundant number, since it is smaller than the sum of its proper divisors (54650243760).

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

27971884752 is a wasteful number, since it uses less digits than its factorization.

27971884752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38796 (or 38790 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 60.

The spelling of 27971884752 in words is "twenty-seven billion, nine hundred seventy-one million, eight hundred eighty-four thousand, seven hundred fifty-two".