68701984768 has 192 divisors, whose sum is σ = 148514446080. Its totient is φ = 31693111296.

The previous prime is 68701984759. The next prime is 68701984777. The reversal of 68701984768 is 86748910786.

It is an interprime number because it is at equal distance from previous prime (68701984759) and next prime (68701984777).

It is a super-2 number, since 2×68701984768² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216725346 + ... + 216725662.

It is an arithmetic number, because the mean of its divisors is an integer number (773512740).

Almost surely, 2^68701984768 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 68701984768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74257223040).

68701984768 is an abundant number, since it is smaller than the sum of its proper divisors (79812461312).

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

68701984768 is a wasteful number, since it uses less digits than its factorization.

68701984768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 68701984768 in words is "sixty-eight billion, seven hundred one million, nine hundred eighty-four thousand, seven hundred sixty-eight".