66146866611 has 32 divisors (see below), whose sum is σ = 103997122560. Its totient is φ = 36615556224.

The previous prime is 66146866609. The next prime is 66146866631. The reversal of 66146866611 is 11666864166.

It is not a de Polignac number, because 66146866611 - 2¹ = 66146866609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66146866631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288220 + ... + 464073.

It is an arithmetic number, because the mean of its divisors is an integer number (3249910080).

Almost surely, 2^66146866611 is an apocalyptic number.

66146866611 is a deficient number, since it is larger than the sum of its proper divisors (37850255949).

66146866611 is a wasteful number, since it uses less digits than its factorization.

66146866611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752435.

The product of its digits is 1492992, while the sum is 51.

The spelling of 66146866611 in words is "sixty-six billion, one hundred forty-six million, eight hundred sixty-six thousand, six hundred eleven".