268687147369 has 4 divisors (see below), whose sum is σ = 268692864580. Its totient is φ = 268681430160.

The previous prime is 268687147361. The next prime is 268687147381. The reversal of 268687147369 is 963741786862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96495345769 + 172191801600 = 310637^2 + 414960^2 .

It is a cyclic number.

It is not a de Polignac number, because 268687147369 - 2³ = 268687147361 is a prime.

It is a super-2 number, since 2×268687147369² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268687147361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2787522 + ... + 2882299.

It is an arithmetic number, because the mean of its divisors is an integer number (67173216145).

Almost surely, 2^268687147369 is an apocalyptic number.

It is an amenable number.

268687147369 is a deficient number, since it is larger than the sum of its proper divisors (5717211).

268687147369 is an equidigital number, since it uses as much as digits as its factorization.

268687147369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717210.

The product of its digits is 146313216, while the sum is 67.

The spelling of 268687147369 in words is "two hundred sixty-eight billion, six hundred eighty-seven million, one hundred forty-seven thousand, three hundred sixty-nine".