68481457313 has 4 divisors (see below), whose sum is σ = 72085744560. Its totient is φ = 64877170068.

The previous prime is 68481457283. The next prime is 68481457321. The reversal of 68481457313 is 31375418486.

68481457313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 68481457313 - 2¹⁰ = 68481456289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68481457613) 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, 1802143595 + ... + 1802143632.

It is an arithmetic number, because the mean of its divisors is an integer number (18021436140).

Almost surely, 2^68481457313 is an apocalyptic number.

It is an amenable number.

68481457313 is a deficient number, since it is larger than the sum of its proper divisors (3604287247).

68481457313 is a wasteful number, since it uses less digits than its factorization.

68481457313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604287246.

The product of its digits is 1935360, while the sum is 50.

The spelling of 68481457313 in words is "sixty-eight billion, four hundred eighty-one million, four hundred fifty-seven thousand, three hundred thirteen".