68085940608 has 336 divisors, whose sum is σ = 236585555460. Its totient is φ = 19451819520.

The previous prime is 68085940567. The next prime is 68085940639. The reversal of 68085940608 is 80604958086.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×68085940608² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 4564843 + ... + 4579733.

Almost surely, 2^68085940608 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 68085940608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118292777730).

68085940608 is an abundant number, since it is smaller than the sum of its proper divisors (168499614852).

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

68085940608 is an equidigital number, since it uses as much as digits as its factorization.

68085940608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14937 (or 14903 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 68085940608 in words is "sixty-eight billion, eighty-five million, nine hundred forty thousand, six hundred eight".