66676850011 has 4 divisors (see below), whose sum is σ = 67590231592. Its totient is φ = 65763468432.

The previous prime is 66676849997. The next prime is 66676850041. The reversal of 66676850011 is 11005867666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11005867666 = 2 ⋅5502933833.

It is a cyclic number.

It is not a de Polignac number, because 66676850011 - 2²³ = 66668461403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66676850041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456690681 + ... + 456690826.

It is an arithmetic number, because the mean of its divisors is an integer number (16897557898).

Almost surely, 2^66676850011 is an apocalyptic number.

66676850011 is a deficient number, since it is larger than the sum of its proper divisors (913381581).

66676850011 is an equidigital number, since it uses as much as digits as its factorization.

66676850011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913381580.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 66676850011 in words is "sixty-six billion, six hundred seventy-six million, eight hundred fifty thousand, eleven".