66065008827 has 18 divisors (see below), whose sum is σ = 91038863604. Its totient is φ = 42613682520.

The previous prime is 66065008819. The next prime is 66065008843. The reversal of 66065008827 is 72880056066.

It is not a de Polignac number, because 66065008827 - 2³ = 66065008819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66065008027) 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 17 ways as a sum of consecutive naturals, for example, 13798528 + ... + 13803314.

Almost surely, 2^66065008827 is an apocalyptic number.

66065008827 is a deficient number, since it is larger than the sum of its proper divisors (24973854777).

66065008827 is an frugal number, since it uses more digits than its factorization.

66065008827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639 (or 4821 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

Multiplying 66065008827 by its sum of digits (48), we get a square (3171120423696 = 1780764²).

The spelling of 66065008827 in words is "sixty-six billion, sixty-five million, eight thousand, eight hundred twenty-seven".