268644773713 has 4 divisors (see below), whose sum is σ = 268814481408. Its totient is φ = 268475066020.

The previous prime is 268644773707. The next prime is 268644773717. The reversal of 268644773713 is 317377446862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268644773713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268644773717) 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, 84851473 + ... + 84854638.

It is an arithmetic number, because the mean of its divisors is an integer number (67203620352).

Almost surely, 2^268644773713 is an apocalyptic number.

It is an amenable number.

268644773713 is a deficient number, since it is larger than the sum of its proper divisors (169707695).

268644773713 is a wasteful number, since it uses less digits than its factorization.

268644773713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169707694.

The product of its digits is 28449792, while the sum is 58.

The spelling of 268644773713 in words is "two hundred sixty-eight billion, six hundred forty-four million, seven hundred seventy-three thousand, seven hundred thirteen".