66271206085 has 16 divisors (see below), whose sum is σ = 95669712000. Its totient is φ = 43051369536.

The previous prime is 66271206083. The next prime is 66271206091. The reversal of 66271206085 is 58060217266.

It is not a de Polignac number, because 66271206085 - 2¹ = 66271206083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66271206083) 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 15 ways as a sum of consecutive naturals, for example, 49827310 + ... + 49828639.

It is an arithmetic number, because the mean of its divisors is an integer number (5979357000).

Almost surely, 2^66271206085 is an apocalyptic number.

It is an amenable number.

66271206085 is a deficient number, since it is larger than the sum of its proper divisors (29398505915).

66271206085 is a wasteful number, since it uses less digits than its factorization.

66271206085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99655980.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 66271206085 in words is "sixty-six billion, two hundred seventy-one million, two hundred six thousand, eighty-five".