660255322766 has 48 divisors (see below), whose sum is σ = 1141267848336. Its totient is φ = 284713810944.

The previous prime is 660255322757. The next prime is 660255322873. The reversal of 660255322766 is 667223552066.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 708725 + ... + 1350111.

It is an arithmetic number, because the mean of its divisors is an integer number (23776413507).

Almost surely, 2^660255322766 is an apocalyptic number.

660255322766 is a deficient number, since it is larger than the sum of its proper divisors (481012525570).

660255322766 is a wasteful number, since it uses less digits than its factorization.

660255322766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641573 (or 641556 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 660255322766 in words is "six hundred sixty billion, two hundred fifty-five million, three hundred twenty-two thousand, seven hundred sixty-six".