27755571705 has 16 divisors (see below), whose sum is σ = 44420204544. Its totient is φ = 14799208320.

The previous prime is 27755571667. The next prime is 27755571709. The reversal of 27755571705 is 50717555772.

It is a happy number.

It is not a de Polignac number, because 27755571705 - 2¹¹ = 27755569657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27755571709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173716 + ... + 292725.

It is an arithmetic number, because the mean of its divisors is an integer number (2776262784).

Almost surely, 2^27755571705 is an apocalyptic number.

It is an amenable number.

27755571705 is a deficient number, since it is larger than the sum of its proper divisors (16664632839).

27755571705 is a wasteful number, since it uses less digits than its factorization.

27755571705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470416.

The product of its (nonzero) digits is 3001250, while the sum is 51.

The spelling of 27755571705 in words is "twenty-seven billion, seven hundred fifty-five million, five hundred seventy-one thousand, seven hundred five".