27747528704 has 78 divisors (see below), whose sum is σ = 64548061524. Its totient is φ = 11891712000.

The previous prime is 27747528703. The next prime is 27747528797. The reversal of 27747528704 is 40782574772.

It is not an unprimeable number, because it can be changed into a prime (27747528703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131579 + ... + 269829.

Almost surely, 2^27747528704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27747528704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32274030762).

27747528704 is an abundant number, since it is smaller than the sum of its proper divisors (36800532820).

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

27747528704 is an equidigital number, since it uses as much as digits as its factorization.

27747528704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138289 (or 138260 counting only the distinct ones).

The product of its (nonzero) digits is 6146560, while the sum is 53.

The spelling of 27747528704 in words is "twenty-seven billion, seven hundred forty-seven million, five hundred twenty-eight thousand, seven hundred four".