68725810544520 has 64 divisors (see below), whose sum is σ = 206333745552000. Its totient is φ = 18312988241408.

The previous prime is 68725810544473. The next prime is 68725810544557. The reversal of 68725810544520 is 2544501852786.

It is a happy number.

68725810544520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216943725 + ... + 217260284.

It is an arithmetic number, because the mean of its divisors is an integer number (3223964774250).

Almost surely, 2^{68725810544520} is an apocalyptic number.

68725810544520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68725810544520 is an abundant number, since it is smaller than the sum of its proper divisors (137607935007480).

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

68725810544520 is a wasteful number, since it uses less digits than its factorization.

68725810544520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434205342 (or 434205338 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 57.

The spelling of 68725810544520 in words is "sixty-eight trillion, seven hundred twenty-five billion, eight hundred ten million, five hundred forty-four thousand, five hundred twenty".