666364712062766 has 8 divisors (see below), whose sum is σ = 999547564205520. Its totient is φ = 333182190660928.

The previous prime is 666364712062723. The next prime is 666364712062771. The reversal of 666364712062766 is 667260217463666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 666364712062696 and 666364712062705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77585411 + ... + 85745118.

It is an arithmetic number, because the mean of its divisors is an integer number (124943445525690).

Almost surely, 2^{666364712062766} is an apocalyptic number.

666364712062766 is a deficient number, since it is larger than the sum of its proper divisors (333182852142754).

666364712062766 is a wasteful number, since it uses less digits than its factorization.

666364712062766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165370458.

The product of its (nonzero) digits is 658409472, while the sum is 68.

The spelling of 666364712062766 in words is "six hundred sixty-six trillion, three hundred sixty-four billion, seven hundred twelve million, sixty-two thousand, seven hundred sixty-six".