268341612289 has 3 divisors (see below), whose sum is σ = 268342130307. Its totient is φ = 268341094272.

The previous prime is 268341612241. The next prime is 268341612311. The reversal of 268341612289 is 982216143862.

It is a happy number.

The square root of 268341612289 is 518017.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 41773228225 + 226568384064 = 204385^2 + 475992^2 .

It is a de Polignac number, because none of the positive numbers 2^k-268341612289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268341612239) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 259009 + ... + 777025.

It is an arithmetic number, because the mean of its divisors is an integer number (89447376769).

Almost surely, 2^268341612289 is an apocalyptic number.

268341612289 is the 518017-th square number.

268341612289 is the 259009-th centered octagonal number.

It is an amenable number.

268341612289 is a deficient number, since it is larger than the sum of its proper divisors (518018).

268341612289 is an frugal number, since it uses more digits than its factorization.

268341612289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036034 (or 518017 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The spelling of 268341612289 in words is "two hundred sixty-eight billion, three hundred forty-one million, six hundred twelve thousand, two hundred eighty-nine".