27740545566 has 32 divisors (see below), whose sum is σ = 61836514560. Its totient is φ = 8244867456.

The previous prime is 27740545559. The next prime is 27740545577. The reversal of 27740545566 is 66554504772.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7155066 + ... + 7158941.

It is an arithmetic number, because the mean of its divisors is an integer number (1932391080).

Almost surely, 2^27740545566 is an apocalyptic number.

27740545566 is an abundant number, since it is smaller than the sum of its proper divisors (34095968994).

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

27740545566 is a wasteful number, since it uses less digits than its factorization.

27740545566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14314048.

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

The spelling of 27740545566 in words is "twenty-seven billion, seven hundred forty million, five hundred forty-five thousand, five hundred sixty-six".