2656768684769 has 8 divisors (see below), whose sum is σ = 2660796133248. Its totient is φ = 2652743882880.

The previous prime is 2656768684741. The next prime is 2656768684777. The reversal of 2656768684769 is 9674868676562.

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

It is a cyclic number.

It is not a de Polignac number, because 2656768684769 - 2¹² = 2656768680673 is a prime.

It is a super-2 number, since 2×2656768684769² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2656768684693 and 2656768684702.

It is not an unprimeable number, because it can be changed into a prime (2656768684709) 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, 1352204 + ... + 2672450.

It is an arithmetic number, because the mean of its divisors is an integer number (332599516656).

Almost surely, 2^{2656768684769} is an apocalyptic number.

It is an amenable number.

2656768684769 is a deficient number, since it is larger than the sum of its proper divisors (4027448479).

2656768684769 is a wasteful number, since it uses less digits than its factorization.

2656768684769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323295.

The product of its digits is 8778792960, while the sum is 80.

The spelling of 2656768684769 in words is "two trillion, six hundred fifty-six billion, seven hundred sixty-eight million, six hundred eighty-four thousand, seven hundred sixty-nine".