68344572389 has 8 divisors (see below), whose sum is σ = 69207876192. Its totient is φ = 67482218160.

The previous prime is 68344572379. The next prime is 68344572403. The reversal of 68344572389 is 98327544386.

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-68344572389 is a prime.

It is a super-2 number, since 2×68344572389² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68344572379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91979 + ... + 380984.

It is an arithmetic number, because the mean of its divisors is an integer number (8650984524).

Almost surely, 2^68344572389 is an apocalyptic number.

It is an amenable number.

68344572389 is a deficient number, since it is larger than the sum of its proper divisors (863303803).

68344572389 is a wasteful number, since it uses less digits than its factorization.

68344572389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474787.

The product of its digits is 34836480, while the sum is 59.

The spelling of 68344572389 in words is "sixty-eight billion, three hundred forty-four million, five hundred seventy-two thousand, three hundred eighty-nine".