268680664379 has 4 divisors (see below), whose sum is σ = 268868949384. Its totient is φ = 268492379376.

The previous prime is 268680664361. The next prime is 268680664487. The reversal of 268680664379 is 973466086862.

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 268680664379 - 2¹⁶ = 268680598843 is a prime.

It is a super-2 number, since 2×268680664379² (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 (268680664579) 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, 94140362 + ... + 94143215.

It is an arithmetic number, because the mean of its divisors is an integer number (67217237346).

Almost surely, 2^268680664379 is an apocalyptic number.

268680664379 is a deficient number, since it is larger than the sum of its proper divisors (188285005).

268680664379 is a wasteful number, since it uses less digits than its factorization.

268680664379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188285004.

The product of its (nonzero) digits is 125411328, while the sum is 65.

The spelling of 268680664379 in words is "two hundred sixty-eight billion, six hundred eighty million, six hundred sixty-four thousand, three hundred seventy-nine".