27823552666 has 32 divisors (see below), whose sum is σ = 51579779328. Its totient is φ = 10961429760.

The previous prime is 27823552657. The next prime is 27823552699. The reversal of 27823552666 is 66625532872.

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, 273310 + ... + 361033.

It is an arithmetic number, because the mean of its divisors is an integer number (1611868104).

Almost surely, 2^27823552666 is an apocalyptic number.

27823552666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27823552666 is a deficient number, since it is larger than the sum of its proper divisors (23756226662).

27823552666 is a wasteful number, since it uses less digits than its factorization.

27823552666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634606.

The product of its digits is 7257600, while the sum is 52.

The spelling of 27823552666 in words is "twenty-seven billion, eight hundred twenty-three million, five hundred fifty-two thousand, six hundred sixty-six".