68339433792 has 224 divisors, whose sum is σ = 210964515840. Its totient is φ = 19120066560.

The previous prime is 68339433791. The next prime is 68339433797. The reversal of 68339433792 is 29733493386.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×68339433792² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68339433791) 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, 22280643 + ... + 22283709.

Almost surely, 2^68339433792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68339433792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105482257920).

68339433792 is an abundant number, since it is smaller than the sum of its proper divisors (142625082048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68339433792 is a wasteful number, since it uses less digits than its factorization.

68339433792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429 (or 3419 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 57.

The spelling of 68339433792 in words is "sixty-eight billion, three hundred thirty-nine million, four hundred thirty-three thousand, seven hundred ninety-two".