268958876891 has 4 divisors (see below), whose sum is σ = 268988335152. Its totient is φ = 268929418632.

The previous prime is 268958876881. The next prime is 268958876903. The reversal of 268958876891 is 198678859862.

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 268958876891 - 2¹⁴ = 268958860507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268958876881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14715431 + ... + 14733696.

It is an arithmetic number, because the mean of its divisors is an integer number (67247083788).

Almost surely, 2^268958876891 is an apocalyptic number.

268958876891 is a deficient number, since it is larger than the sum of its proper divisors (29458261).

268958876891 is an equidigital number, since it uses as much as digits as its factorization.

268958876891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29458260.

The product of its digits is 836075520, while the sum is 77.

The spelling of 268958876891 in words is "two hundred sixty-eight billion, nine hundred fifty-eight million, eight hundred seventy-six thousand, eight hundred ninety-one".