82668286562666 has 24 divisors (see below), whose sum is σ = 144248054101056. Its totient is φ = 35429184718200.

The previous prime is 82668286562623. The next prime is 82668286562669. The reversal of 82668286562666 is 66626568286628.

It is not an unprimeable number, because it can be changed into a prime (82668286562669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65213615 + ... + 66469181.

It is an arithmetic number, because the mean of its divisors is an integer number (6010335587544).

Almost surely, 2^{82668286562666} is an apocalyptic number.

82668286562666 is a deficient number, since it is larger than the sum of its proper divisors (61579767538390).

82668286562666 is a wasteful number, since it uses less digits than its factorization.

82668286562666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927434 (or 1927427 counting only the distinct ones).

The product of its digits is 5733089280, while the sum is 77.

The spelling of 82668286562666 in words is "eighty-two trillion, six hundred sixty-eight billion, two hundred eighty-six million, five hundred sixty-two thousand, six hundred sixty-six".