268666185646 has 16 divisors (see below), whose sum is σ = 403441132320. Its totient is φ = 134185891840.

The previous prime is 268666185637. The next prime is 268666185649. The reversal of 268666185646 is 646581666862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268666185649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7043895 + ... + 7081933.

It is an arithmetic number, because the mean of its divisors is an integer number (25215070770).

Almost surely, 2^268666185646 is an apocalyptic number.

268666185646 is a deficient number, since it is larger than the sum of its proper divisors (134774946674).

268666185646 is a wasteful number, since it uses less digits than its factorization.

268666185646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41819.

The product of its digits is 119439360, while the sum is 64.

The spelling of 268666185646 in words is "two hundred sixty-eight billion, six hundred sixty-six million, one hundred eighty-five thousand, six hundred forty-six".