68973729013 has 8 divisors (see below), whose sum is σ = 78831368000. Its totient is φ = 59117152320.

The previous prime is 68973729001. The next prime is 68973729023. The reversal of 68973729013 is 31092737986.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68973729013 is a prime.

It is the 262629-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68973729023) by changing a digit.

It is a nontrivial repunit in base 262628.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121203 + ... + 390688.

It is an arithmetic number, because the mean of its divisors is an integer number (9853921000).

Almost surely, 2^68973729013 is an apocalyptic number.

It is an amenable number.

68973729013 is a deficient number, since it is larger than the sum of its proper divisors (9857638987).

68973729013 is a wasteful number, since it uses less digits than its factorization.

68973729013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531147.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 68973729013 in words is "sixty-eight billion, nine hundred seventy-three million, seven hundred twenty-nine thousand, thirteen".