268206680123 has 4 divisors (see below), whose sum is σ = 273913205280. Its totient is φ = 262500154968.

The previous prime is 268206680107. The next prime is 268206680143. The reversal of 268206680123 is 321086602862.

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

It is a cyclic number.

It is not a de Polignac number, because 268206680123 - 2⁴ = 268206680107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268206680143) 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, 2853262508 + ... + 2853262601.

It is an arithmetic number, because the mean of its divisors is an integer number (68478301320).

Almost surely, 2^268206680123 is an apocalyptic number.

268206680123 is a deficient number, since it is larger than the sum of its proper divisors (5706525157).

268206680123 is an equidigital number, since it uses as much as digits as its factorization.

268206680123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5706525156.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 268206680123 in words is "two hundred sixty-eight billion, two hundred six million, six hundred eighty thousand, one hundred twenty-three".