268686240206496 has 96 divisors (see below), whose sum is σ = 806062978344960. Its totient is φ = 76767091704576.

The previous prime is 268686240206479. The next prime is 268686240206497. The reversal of 268686240206496 is 694602042686862.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 268686240206496.

It is not an unprimeable number, because it can be changed into a prime (268686240206497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140335125 + ... + 142236843.

It is an arithmetic number, because the mean of its divisors is an integer number (8396489357760).

Almost surely, 2^{268686240206496} is an apocalyptic number.

It is an amenable number.

268686240206496 is an abundant number, since it is smaller than the sum of its proper divisors (537376738138464).

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

268686240206496 is a wasteful number, since it uses less digits than its factorization.

268686240206496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111986 (or 2111978 counting only the distinct ones).

The product of its (nonzero) digits is 573308928, while the sum is 69.

The spelling of 268686240206496 in words is "two hundred sixty-eight trillion, six hundred eighty-six billion, two hundred forty million, two hundred six thousand, four hundred ninety-six".