268785854171 has 4 divisors (see below), whose sum is σ = 270193110144. Its totient is φ = 267378598200.

The previous prime is 268785854147. The next prime is 268785854177. The reversal of 268785854171 is 171458587862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268785854171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268785854177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703627700 + ... + 703628081.

It is an arithmetic number, because the mean of its divisors is an integer number (67548277536).

Almost surely, 2^268785854171 is an apocalyptic number.

268785854171 is a deficient number, since it is larger than the sum of its proper divisors (1407255973).

268785854171 is a wasteful number, since it uses less digits than its factorization.

268785854171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407255972.

The product of its digits is 30105600, while the sum is 62.

The spelling of 268785854171 in words is "two hundred sixty-eight billion, seven hundred eighty-five million, eight hundred fifty-four thousand, one hundred seventy-one".