68724212064 has 96 divisors (see below), whose sum is σ = 186743128320. Its totient is φ = 22103757312.

The previous prime is 68724212059. The next prime is 68724212071. The reversal of 68724212064 is 46021242786.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4789669 + ... + 4803995.

It is an arithmetic number, because the mean of its divisors is an integer number (1945240920).

Almost surely, 2^68724212064 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 68724212064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93371564160).

68724212064 is an abundant number, since it is smaller than the sum of its proper divisors (118018916256).

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

68724212064 is a wasteful number, since it uses less digits than its factorization.

68724212064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092 (or 16084 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 68724212064 in words is "sixty-eight billion, seven hundred twenty-four million, two hundred twelve thousand, sixty-four".