27643312752 has 80 divisors (see below), whose sum is σ = 77927393280. Its totient is φ = 8374233600.

The previous prime is 27643312727. The next prime is 27643312759. The reversal of 27643312752 is 25721334672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27643312759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2491377 + ... + 2502447.

It is an arithmetic number, because the mean of its divisors is an integer number (974092416).

Almost surely, 2^27643312752 is an apocalyptic number.

27643312752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27643312752 is an abundant number, since it is smaller than the sum of its proper divisors (50284080528).

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

27643312752 is a wasteful number, since it uses less digits than its factorization.

27643312752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15822 (or 15816 counting only the distinct ones).

The product of its digits is 423360, while the sum is 42.

The spelling of 27643312752 in words is "twenty-seven billion, six hundred forty-three million, three hundred twelve thousand, seven hundred fifty-two".