27740287755 has 32 divisors (see below), whose sum is σ = 51911654400. Its totient is φ = 14016144096.

The previous prime is 27740287739. The next prime is 27740287781. The reversal of 27740287755 is 55778204772.

27740287755 is a `hidden beast` number, since 277 + 40 + 287 + 7 + 55 = 666.

It is not a de Polignac number, because 27740287755 - 2⁴ = 27740287739 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 5404899 + ... + 5410028.

It is an arithmetic number, because the mean of its divisors is an integer number (1622239200).

Almost surely, 2^27740287755 is an apocalyptic number.

27740287755 is a deficient number, since it is larger than the sum of its proper divisors (24171366645).

27740287755 is a wasteful number, since it uses less digits than its factorization.

27740287755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10814960 (or 10814954 counting only the distinct ones).

The product of its (nonzero) digits is 7683200, while the sum is 54.

The spelling of 27740287755 in words is "twenty-seven billion, seven hundred forty million, two hundred eighty-seven thousand, seven hundred fifty-five".