268871726591 has 8 divisors (see below), whose sum is σ = 289598661744. Its totient is φ = 248151147840.

The previous prime is 268871726581. The next prime is 268871726597. The reversal of 268871726591 is 195627178862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268871726591 - 2⁶ = 268871726527 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 (268871726597) 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 7 ways as a sum of consecutive naturals, for example, 1501061 + ... + 1670606.

It is an arithmetic number, because the mean of its divisors is an integer number (36199832718).

Almost surely, 2^268871726591 is an apocalyptic number.

268871726591 is a deficient number, since it is larger than the sum of its proper divisors (20726935153).

268871726591 is a wasteful number, since it uses less digits than its factorization.

268871726591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178201.

The product of its digits is 20321280, while the sum is 62.

The spelling of 268871726591 in words is "two hundred sixty-eight billion, eight hundred seventy-one million, seven hundred twenty-six thousand, five hundred ninety-one".