68556325621440 has 224 divisors, whose sum is σ = 220281337805760. Its totient is φ = 18062689959936.

The previous prime is 68556325621417. The next prime is 68556325621457. The reversal of 68556325621440 is 4412652365586.

68556325621440 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 31 ways as a sum of consecutive naturals, for example, 54599406 + ... + 55840914.

It is an arithmetic number, because the mean of its divisors is an integer number (983398829490).

Almost surely, 2^{68556325621440} is an apocalyptic number.

68556325621440 is a gapful number since it is divisible by the number (60) 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 68556325621440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110140668902880).

68556325621440 is an abundant number, since it is smaller than the sum of its proper divisors (151725012184320).

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

68556325621440 is a wasteful number, since it uses less digits than its factorization.

68556325621440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242219 (or 1242209 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 57.

The spelling of 68556325621440 in words is "sixty-eight trillion, five hundred fifty-six billion, three hundred twenty-five million, six hundred twenty-one thousand, four hundred forty".