68931543744 has 168 divisors, whose sum is σ = 226133375520. Its totient is φ = 19666132992.

The previous prime is 68931543719. The next prime is 68931543749. The reversal of 68931543744 is 44734513986.

68931543744 is a `hidden beast` number, since 6 + 8 + 93 + 1 + 543 + 7 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is not an unprimeable number, because it can be changed into a prime (68931543749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2846632 + ... + 2870744.

Almost surely, 2^68931543744 is an apocalyptic number.

68931543744 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 68931543744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113066687760).

68931543744 is an abundant number, since it is smaller than the sum of its proper divisors (157201831776).

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

68931543744 is a wasteful number, since it uses less digits than its factorization.

68931543744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24847 (or 24834 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 68931543744 in words is "sixty-eight billion, nine hundred thirty-one million, five hundred forty-three thousand, seven hundred forty-four".