27755552505 has 16 divisors (see below), whose sum is σ = 44456099904. Its totient is φ = 14787222720.

The previous prime is 27755552497. The next prime is 27755552521. The reversal of 27755552505 is 50525555772.

It is not a de Polignac number, because 27755552505 - 2³ = 27755552497 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 969079 + ... + 997308.

It is an arithmetic number, because the mean of its divisors is an integer number (2778506244).

Almost surely, 2^27755552505 is an apocalyptic number.

It is an amenable number.

27755552505 is a deficient number, since it is larger than the sum of its proper divisors (16700547399).

27755552505 is a wasteful number, since it uses less digits than its factorization.

27755552505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967336.

The product of its (nonzero) digits is 3062500, while the sum is 48.

The spelling of 27755552505 in words is "twenty-seven billion, seven hundred fifty-five million, five hundred fifty-two thousand, five hundred five".