27766565086 has 32 divisors (see below), whose sum is σ = 47962430208. Its totient is φ = 11942054400.

The previous prime is 27766565077. The next prime is 27766565089. The reversal of 27766565086 is 68056566772.

It is a self number, because there is not a number n which added to its sum of digits gives 27766565086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27766565089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266350 + ... + 355633.

It is an arithmetic number, because the mean of its divisors is an integer number (1498825944).

Almost surely, 2^27766565086 is an apocalyptic number.

27766565086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27766565086 is a deficient number, since it is larger than the sum of its proper divisors (20195865122).

27766565086 is a wasteful number, since it uses less digits than its factorization.

27766565086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622116.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 27766565086 in words is "twenty-seven billion, seven hundred sixty-six million, five hundred sixty-five thousand, eighty-six".