666201280960 has 28 divisors (see below), whose sum is σ = 1586391801048. Its totient is φ = 266480512256.

The previous prime is 666201280951. The next prime is 666201280991. The reversal of 666201280960 is 69082102666.

It is a self number, because there is not a number n which added to its sum of digits gives 666201280960.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040939182 + ... + 1040939821.

Almost surely, 2^666201280960 is an apocalyptic number.

It is an amenable number.

666201280960 is an abundant number, since it is smaller than the sum of its proper divisors (920190520088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666201280960 is a wasteful number, since it uses less digits than its factorization.

666201280960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081879020 (or 2081879010 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 666201280960 in words is "six hundred sixty-six billion, two hundred one million, two hundred eighty thousand, nine hundred sixty".