68236393896 has 320 divisors, whose sum is σ = 213909569280. Its totient is φ = 20145438720.

The previous prime is 68236393889. The next prime is 68236393919. The reversal of 68236393896 is 69839363286.

68236393896 is a `hidden beast` number, since 6 + 8 + 236 + 393 + 8 + 9 + 6 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 118260360 + ... + 118260936.

It is an arithmetic number, because the mean of its divisors is an integer number (668467404).

Almost surely, 2^68236393896 is an apocalyptic number.

68236393896 is a gapful number since it is divisible by the number (66) 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 68236393896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106954784640).

68236393896 is an abundant number, since it is smaller than the sum of its proper divisors (145673175384).

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

68236393896 is a wasteful number, since it uses less digits than its factorization.

68236393896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 993 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 63.

The spelling of 68236393896 in words is "sixty-eight billion, two hundred thirty-six million, three hundred ninety-three thousand, eight hundred ninety-six".