268685506343 has 16 divisors (see below), whose sum is σ = 271424545920. Its totient is φ = 265963219200.

The previous prime is 268685506333. The next prime is 268685506357. The reversal of 268685506343 is 343605586862.

It is a cyclic number.

It is not a de Polignac number, because 268685506343 - 2²⁶ = 268618397479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268685506333) 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, 43186973 + ... + 43193193.

It is an arithmetic number, because the mean of its divisors is an integer number (16964034120).

Almost surely, 2^268685506343 is an apocalyptic number.

268685506343 is a deficient number, since it is larger than the sum of its proper divisors (2739039577).

268685506343 is a wasteful number, since it uses less digits than its factorization.

268685506343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498.

The product of its (nonzero) digits is 24883200, while the sum is 56.

The spelling of 268685506343 in words is "two hundred sixty-eight billion, six hundred eighty-five million, five hundred six thousand, three hundred forty-three".