268591617766 has 8 divisors (see below), whose sum is σ = 403848973080. Its totient is φ = 133975293408.

The previous prime is 268591617751. The next prime is 268591617779. The reversal of 268591617766 is 667716195862.

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 = 268591617698 and 268591617707.

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, 160256691 + ... + 160258366.

It is an arithmetic number, because the mean of its divisors is an integer number (50481121635).

Almost surely, 2^268591617766 is an apocalyptic number.

268591617766 is a deficient number, since it is larger than the sum of its proper divisors (135257355314).

268591617766 is a wasteful number, since it uses less digits than its factorization.

268591617766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320515478.

The product of its digits is 45722880, while the sum is 64.

The spelling of 268591617766 in words is "two hundred sixty-eight billion, five hundred ninety-one million, six hundred seventeen thousand, seven hundred sixty-six".