68044539368064 has 128 divisors (see below), whose sum is σ = 210779367984000. Its totient is φ = 19441296924672.

The previous prime is 68044539368063. The next prime is 68044539368089. The reversal of 68044539368064 is 46086393544086.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 68044539367986 and 68044539368004.

It is not an unprimeable number, because it can be changed into a prime (68044539368063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258176337 + ... + 258439760.

It is an arithmetic number, because the mean of its divisors is an integer number (1646713812375).

Almost surely, 2^{68044539368064} is an apocalyptic number.

68044539368064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68044539368064 is an abundant number, since it is smaller than the sum of its proper divisors (142734828615936).

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

68044539368064 is an equidigital number, since it uses as much as digits as its factorization.

68044539368064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516616135 (or 516616109 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 66.

The spelling of 68044539368064 in words is "sixty-eight trillion, forty-four billion, five hundred thirty-nine million, three hundred sixty-eight thousand, sixty-four".