68088335616 has 216 divisors, whose sum is σ = 232671659584. Its totient is φ = 19453685760.

The previous prime is 68088335611. The next prime is 68088335617. The reversal of 68088335616 is 61653388086.

It is a tau number, because it is divible by the number of its divisors (216).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68088335611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 357276 + ... + 513636.

Almost surely, 2^68088335616 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 68088335616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116335829792).

68088335616 is an abundant number, since it is smaller than the sum of its proper divisors (164583323968).

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

68088335616 is an equidigital number, since it uses as much as digits as its factorization.

68088335616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156399 (or 156373 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 68088335616 in words is "sixty-eight billion, eighty-eight million, three hundred thirty-five thousand, six hundred sixteen".