68721508296 has 256 divisors, whose sum is σ = 223609766400. Its totient is φ = 19149032448.

The previous prime is 68721508267. The next prime is 68721508351. The reversal of 68721508296 is 69280512786.

68721508296 is a `hidden beast` number, since 68 + 72 + 1 + 508 + 2 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13861050 + ... + 13866006.

It is an arithmetic number, because the mean of its divisors is an integer number (873475650).

Almost surely, 2^68721508296 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 68721508296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111804883200).

68721508296 is an abundant number, since it is smaller than the sum of its proper divisors (154888258104).

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

68721508296 is a wasteful number, since it uses less digits than its factorization.

68721508296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205 (or 5195 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 68721508296 in words is "sixty-eight billion, seven hundred twenty-one million, five hundred eight thousand, two hundred ninety-six".