27704564556 has 96 divisors (see below), whose sum is σ = 68859096768. Its totient is φ = 8639447040.

The previous prime is 27704564527. The next prime is 27704564579. The reversal of 27704564556 is 65546540772.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 27704564499 and 27704564508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41165436 + ... + 41166108.

It is an arithmetic number, because the mean of its divisors is an integer number (717282258).

Almost surely, 2^27704564556 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 27704564556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34429548384).

27704564556 is an abundant number, since it is smaller than the sum of its proper divisors (41154532212).

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

27704564556 is a wasteful number, since it uses less digits than its factorization.

27704564556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 51.

The spelling of 27704564556 in words is "twenty-seven billion, seven hundred four million, five hundred sixty-four thousand, five hundred fifty-six".