66200027827 has 4 divisors (see below), whose sum is σ = 66676287160. Its totient is φ = 65723768496.

The previous prime is 66200027809. The next prime is 66200027869. The reversal of 66200027827 is 72872000266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66200027827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66200027827.

It is not an unprimeable number, because it can be changed into a prime (66200027807) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 238129458 + ... + 238129735.

It is an arithmetic number, because the mean of its divisors is an integer number (16669071790).

Almost surely, 2^66200027827 is an apocalyptic number.

66200027827 is a deficient number, since it is larger than the sum of its proper divisors (476259333).

66200027827 is a wasteful number, since it uses less digits than its factorization.

66200027827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476259332.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 66200027827 in words is "sixty-six billion, two hundred million, twenty-seven thousand, eight hundred twenty-seven".