2656768684767 has 4 divisors (see below), whose sum is σ = 3542358246360. Its totient is φ = 1771179123176.

The previous prime is 2656768684741. The next prime is 2656768684777. The reversal of 2656768684767 is 7674868676562.

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

It is a cyclic number.

It is not a de Polignac number, because 2656768684767 - 2²⁶ = 2656701575903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2656768684692 and 2656768684701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656768684777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442794780792 + ... + 442794780797.

It is an arithmetic number, because the mean of its divisors is an integer number (885589561590).

Almost surely, 2^{2656768684767} is an apocalyptic number.

2656768684767 is a deficient number, since it is larger than the sum of its proper divisors (885589561593).

2656768684767 is an equidigital number, since it uses as much as digits as its factorization.

2656768684767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885589561592.

The product of its digits is 6827950080, while the sum is 78.

The spelling of 2656768684767 in words is "two trillion, six hundred fifty-six billion, seven hundred sixty-eight million, six hundred eighty-four thousand, seven hundred sixty-seven".