268957369321 has 3 divisors (see below), whose sum is σ = 268957887933. Its totient is φ = 268956850710.

The previous prime is 268957369319. The next prime is 268957369357. The reversal of 268957369321 is 123963759862.

The square root of 268957369321 is 518611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123963759862 = 2 ⋅61981879931.

It is not a de Polignac number, because 268957369321 - 2¹ = 268957369319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268957369321.

It is not an unprimeable number, because it can be changed into a prime (268957369381) 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, 259306 + ... + 777916.

It is an arithmetic number, because the mean of its divisors is an integer number (89652629311).

Almost surely, 2^268957369321 is an apocalyptic number.

268957369321 is the 518611-st square number.

268957369321 is the 259306-th centered octagonal number.

It is an amenable number.

268957369321 is a deficient number, since it is larger than the sum of its proper divisors (518612).

268957369321 is an frugal number, since it uses more digits than its factorization.

268957369321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037222 (or 518611 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 61.

The spelling of 268957369321 in words is "two hundred sixty-eight billion, nine hundred fifty-seven million, three hundred sixty-nine thousand, three hundred twenty-one".