27740545565 has 8 divisors (see below), whose sum is σ = 33292533600. Its totient is φ = 22189850512.

The previous prime is 27740545559. The next prime is 27740545577. The reversal of 27740545565 is 56554504772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27740545565 - 2⁸ = 27740545309 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 275399 + ... + 362388.

It is an arithmetic number, because the mean of its divisors is an integer number (4161566700).

Almost surely, 2^27740545565 is an apocalyptic number.

It is an amenable number.

27740545565 is a deficient number, since it is larger than the sum of its proper divisors (5551988035).

27740545565 is an equidigital number, since it uses as much as digits as its factorization.

27740545565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646491.

The product of its (nonzero) digits is 5880000, while the sum is 50.

The spelling of 27740545565 in words is "twenty-seven billion, seven hundred forty million, five hundred forty-five thousand, five hundred sixty-five".