68729417913 has 32 divisors (see below), whose sum is σ = 99627630592. Its totient is φ = 41893588800.

The previous prime is 68729417899. The next prime is 68729417917. The reversal of 68729417913 is 31971492786.

It is a happy number.

It is not a de Polignac number, because 68729417913 - 2¹⁸ = 68729155769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68729417917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3114348 + ... + 3136338.

It is an arithmetic number, because the mean of its divisors is an integer number (3113363456).

Almost surely, 2^68729417913 is an apocalyptic number.

It is an amenable number.

68729417913 is a deficient number, since it is larger than the sum of its proper divisors (30898212679).

68729417913 is a wasteful number, since it uses less digits than its factorization.

68729417913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22765.

The product of its digits is 4572288, while the sum is 57.

The spelling of 68729417913 in words is "sixty-eight billion, seven hundred twenty-nine million, four hundred seventeen thousand, nine hundred thirteen".