268661842275 has 24 divisors (see below), whose sum is σ = 444252708864. Its totient is φ = 143265306400.

The previous prime is 268661842247. The next prime is 268661842283. The reversal of 268661842275 is 572248166862.

It is a Cunningham number, because it is equal to 518326²-1.

It is not a de Polignac number, because 268661842275 - 2¹⁰ = 268661841251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259162 + ... + 777488.

It is an arithmetic number, because the mean of its divisors is an integer number (18510529536).

Almost surely, 2^268661842275 is an apocalyptic number.

268661842275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

268661842275 is a deficient number, since it is larger than the sum of its proper divisors (175590866589).

268661842275 is a wasteful number, since it uses less digits than its factorization.

268661842275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525251 (or 525246 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The spelling of 268661842275 in words is "two hundred sixty-eight billion, six hundred sixty-one million, eight hundred forty-two thousand, two hundred seventy-five".