68241664559 has 6 divisors (see below), whose sum is σ = 68549103216. Its totient is φ = 67935598620.

The previous prime is 68241664549. The next prime is 68241664567. The reversal of 68241664559 is 95546614286.

It is a de Polignac number, because none of the positive numbers 2^k-68241664559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68241664529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 636407 + ... + 735864.

It is an arithmetic number, because the mean of its divisors is an integer number (11424850536).

Almost surely, 2^68241664559 is an apocalyptic number.

68241664559 is a deficient number, since it is larger than the sum of its proper divisors (307438657).

68241664559 is an equidigital number, since it uses as much as digits as its factorization.

68241664559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372717 (or 1372494 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 56.

The spelling of 68241664559 in words is "sixty-eight billion, two hundred forty-one million, six hundred sixty-four thousand, five hundred fifty-nine".