68543434752 has 104 divisors (see below), whose sum is σ = 196819114464. Its totient is φ = 21090238464.

The previous prime is 68543434747. The next prime is 68543434777. The reversal of 68543434752 is 25743434586.

It is a tau number, because it is divible by the number of its divisors (104).

It is a junction number, because it is equal to n+sod(n) for n = 68543434695 and 68543434704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54798 + ... + 374285.

Almost surely, 2^68543434752 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 68543434752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98409557232).

68543434752 is an abundant number, since it is smaller than the sum of its proper divisors (128275679712).

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

68543434752 is a wasteful number, since it uses less digits than its factorization.

68543434752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429123 (or 429101 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 51.

The spelling of 68543434752 in words is "sixty-eight billion, five hundred forty-three million, four hundred thirty-four thousand, seven hundred fifty-two".