27688374612 has 24 divisors (see below), whose sum is σ = 71784675200. Its totient is φ = 9229458168.

The previous prime is 27688374611. The next prime is 27688374661. The reversal of 27688374612 is 21647388672.

27688374612 is a `hidden beast` number, since 2 + 76 + 88 + 37 + 461 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27688374611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128186812 + ... + 128187027.

Almost surely, 2^27688374612 is an apocalyptic number.

It is an amenable number.

27688374612 is an abundant number, since it is smaller than the sum of its proper divisors (44096300588).

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

27688374612 is a wasteful number, since it uses less digits than its factorization.

27688374612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256373852 (or 256373844 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The spelling of 27688374612 in words is "twenty-seven billion, six hundred eighty-eight million, three hundred seventy-four thousand, six hundred twelve".