27743639731968 has 144 divisors (see below), whose sum is σ = 76966036085120. Its totient is φ = 8863639031808.

The previous prime is 27743639731963. The next prime is 27743639731981. The reversal of 27743639731968 is 86913793634772.

It is a self number, because there is not a number n which added to its sum of digits gives 27743639731968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27743639731963) 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, 5382238 + ... + 9189981.

Almost surely, 2^{27743639731968} is an apocalyptic number.

It is an amenable number.

27743639731968 is an abundant number, since it is smaller than the sum of its proper divisors (49222396353152).

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

27743639731968 is a wasteful number, since it uses less digits than its factorization.

27743639731968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14572342 (or 14572328 counting only the distinct ones).

The product of its digits is 1728324864, while the sum is 75.

The spelling of 27743639731968 in words is "twenty-seven trillion, seven hundred forty-three billion, six hundred thirty-nine million, seven hundred thirty-one thousand, nine hundred sixty-eight".