27756550545 has 16 divisors (see below), whose sum is σ = 44579348352. Its totient is φ = 14747204480.

The previous prime is 27756550537. The next prime is 27756550561. The reversal of 27756550545 is 54505565772.

It is not a de Polignac number, because 27756550545 - 2³ = 27756550537 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 3513996 + ... + 3521885.

It is an arithmetic number, because the mean of its divisors is an integer number (2786209272).

Almost surely, 2^27756550545 is an apocalyptic number.

It is an amenable number.

27756550545 is a deficient number, since it is larger than the sum of its proper divisors (16822797807).

27756550545 is a wasteful number, since it uses less digits than its factorization.

27756550545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7036152.

The product of its (nonzero) digits is 7350000, while the sum is 51.

The spelling of 27756550545 in words is "twenty-seven billion, seven hundred fifty-six million, five hundred fifty thousand, five hundred forty-five".