268144455208207 has 4 divisors (see below), whose sum is σ = 268990336770696. Its totient is φ = 267298573645720.

The previous prime is 268144455208199. The next prime is 268144455208211. The reversal of 268144455208207 is 702802554441862.

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 268144455208207 - 2³ = 268144455208199 is a prime.

It is a super-2 number, since 2×268144455208207² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268144455208237) 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, 422940780769 + ... + 422940781402.

It is an arithmetic number, because the mean of its divisors is an integer number (67247584192674).

Almost surely, 2^{268144455208207} is an apocalyptic number.

268144455208207 is a deficient number, since it is larger than the sum of its proper divisors (845881562489).

268144455208207 is an equidigital number, since it uses as much as digits as its factorization.

268144455208207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845881562488.

The product of its (nonzero) digits is 34406400, while the sum is 58.

The spelling of 268144455208207 in words is "two hundred sixty-eight trillion, one hundred forty-four billion, four hundred fifty-five million, two hundred eight thousand, two hundred seven".