666460602172368 has 40 divisors (see below), whose sum is σ = 1912988765496000. Its totient is φ = 222153534057312.

The previous prime is 666460602172333. The next prime is 666460602172369. The reversal of 666460602172368 is 863271206064666.

It is a super-3 number, since 3×666460602172368³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666460602172369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771366437268 + ... + 771366438131.

It is an arithmetic number, because the mean of its divisors is an integer number (47824719137400).

Almost surely, 2^{666460602172368} is an apocalyptic number.

It is an amenable number.

666460602172368 is an abundant number, since it is smaller than the sum of its proper divisors (1246528163323632).

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

666460602172368 is a wasteful number, since it uses less digits than its factorization.

666460602172368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542732875416 (or 1542732875404 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 63.

The spelling of 666460602172368 in words is "six hundred sixty-six trillion, four hundred sixty billion, six hundred two million, one hundred seventy-two thousand, three hundred sixty-eight".