268768653569 has 8 divisors (see below), whose sum is σ = 289621967040. Its totient is φ = 247940883216.

The previous prime is 268768653553. The next prime is 268768653599. The reversal of 268768653569 is 965356867862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268768653569 - 2⁴ = 268768653553 is a prime.

It is a super-2 number, since 2×268768653569² (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 (268768653599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6363917 + ... + 6406010.

It is an arithmetic number, because the mean of its divisors is an integer number (36202745880).

Almost surely, 2^268768653569 is an apocalyptic number.

It is an amenable number.

268768653569 is a deficient number, since it is larger than the sum of its proper divisors (20853313471).

268768653569 is a wasteful number, since it uses less digits than its factorization.

268768653569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12771559.

The product of its digits is 783820800, while the sum is 71.

The spelling of 268768653569 in words is "two hundred sixty-eight billion, seven hundred sixty-eight million, six hundred fifty-three thousand, five hundred sixty-nine".