68369819904 has 288 divisors, whose sum is σ = 214756375680. Its totient is φ = 21381120000.

The previous prime is 68369819851. The next prime is 68369819909. The reversal of 68369819904 is 40991896386.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is not an unprimeable number, because it can be changed into a prime (68369819909) 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, 47118379 + ... + 47119829.

It is an arithmetic number, because the mean of its divisors is an integer number (745681860).

Almost surely, 2^68369819904 is an apocalyptic number.

68369819904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68369819904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107378187840).

68369819904 is an abundant number, since it is smaller than the sum of its proper divisors (146386555776).

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

68369819904 is a wasteful number, since it uses less digits than its factorization.

68369819904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 68369819904 in words is "sixty-eight billion, three hundred sixty-nine million, eight hundred nineteen thousand, nine hundred four".