68007143333813 has 4 divisors (see below), whose sum is σ = 68009579409420. Its totient is φ = 68004707258208.

The previous prime is 68007143333807. The next prime is 68007143333867. The reversal of 68007143333813 is 31833334170086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34538870412484 + 33468272921329 = 5876978^2 + 5785177^2 .

It is a cyclic number.

It is not a de Polignac number, because 68007143333813 - 2⁸ = 68007143333557 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 (68007143333873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217995928 + ... + 1218051761.

It is an arithmetic number, because the mean of its divisors is an integer number (17002394852355).

Almost surely, 2^{68007143333813} is an apocalyptic number.

It is an amenable number.

68007143333813 is a deficient number, since it is larger than the sum of its proper divisors (2436075607).

68007143333813 is a wasteful number, since it uses less digits than its factorization.

68007143333813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436075606.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 68007143333813 in words is "sixty-eight trillion, seven billion, one hundred forty-three million, three hundred thirty-three thousand, eight hundred thirteen".