68224216824 has 96 divisors (see below), whose sum is σ = 192879217440. Its totient is φ = 21763987200.

The previous prime is 68224216741. The next prime is 68224216843. The reversal of 68224216824 is 42861242286.

It is a super-2 number, since 2×68224216824² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 68224216824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47412 + ... + 372419.

It is an arithmetic number, because the mean of its divisors is an integer number (2009158515).

Almost surely, 2^68224216824 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 68224216824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96439608720).

68224216824 is an abundant number, since it is smaller than the sum of its proper divisors (124655000616).

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

68224216824 is a wasteful number, since it uses less digits than its factorization.

68224216824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419941 (or 419934 counting only the distinct ones).

The product of its digits is 589824, while the sum is 45.

The spelling of 68224216824 in words is "sixty-eight billion, two hundred twenty-four million, two hundred sixteen thousand, eight hundred twenty-four".