68446729523 has 8 divisors (see below), whose sum is σ = 69112002960. Its totient is φ = 67782134880.

The previous prime is 68446729499. The next prime is 68446729577. The reversal of 68446729523 is 32592764486.

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-68446729523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68446729123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34136 + ... + 371562.

It is an arithmetic number, because the mean of its divisors is an integer number (8639000370).

Almost surely, 2^68446729523 is an apocalyptic number.

68446729523 is a deficient number, since it is larger than the sum of its proper divisors (665273437).

68446729523 is a wasteful number, since it uses less digits than its factorization.

68446729523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339397.

The product of its digits is 17418240, while the sum is 56.

The spelling of 68446729523 in words is "sixty-eight billion, four hundred forty-six million, seven hundred twenty-nine thousand, five hundred twenty-three".