68744700338928 has 160 divisors (see below), whose sum is σ = 186264078336000. Its totient is φ = 21805990195968.

The previous prime is 68744700338921. The next prime is 68744700338969. The reversal of 68744700338928 is 82983300744786.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68744700338921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3806663563 + ... + 3806681621.

It is an arithmetic number, because the mean of its divisors is an integer number (1164150489600).

Almost surely, 2^{68744700338928} 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 68744700338928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93132039168000).

68744700338928 is an abundant number, since it is smaller than the sum of its proper divisors (117519377997072).

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

68744700338928 is a wasteful number, since it uses less digits than its factorization.

68744700338928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35619 (or 35613 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 69.

The spelling of 68744700338928 in words is "sixty-eight trillion, seven hundred forty-four billion, seven hundred million, three hundred thirty-eight thousand, nine hundred twenty-eight".