68168957388 has 96 divisors (see below), whose sum is σ = 186955776000. Its totient is φ = 19323335808.

The previous prime is 68168957323. The next prime is 68168957419. The reversal of 68168957388 is 88375986186.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457528 + ... + 587936.

It is an arithmetic number, because the mean of its divisors is an integer number (1947456000).

Almost surely, 2^68168957388 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 68168957388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93477888000).

68168957388 is an abundant number, since it is smaller than the sum of its proper divisors (118786818612).

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

68168957388 is a wasteful number, since it uses less digits than its factorization.

68168957388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130564 (or 130548 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 69.

The spelling of 68168957388 in words is "sixty-eight billion, one hundred sixty-eight million, nine hundred fifty-seven thousand, three hundred eighty-eight".