68465374656 has 168 divisors, whose sum is σ = 213264414720. Its totient is φ = 19325634048.

The previous prime is 68465374633. The next prime is 68465374699. The reversal of 68465374656 is 65647356486.

It is a tau number, because it is divible by the number of its divisors (168).

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 68465374656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 737025 + ... + 824703.

It is an arithmetic number, because the mean of its divisors is an integer number (1269431040).

Almost surely, 2^68465374656 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 68465374656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106632207360).

68465374656 is an abundant number, since it is smaller than the sum of its proper divisors (144799040064).

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

68465374656 is a wasteful number, since it uses less digits than its factorization.

68465374656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87791 (or 87774 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 60.

The spelling of 68465374656 in words is "sixty-eight billion, four hundred sixty-five million, three hundred seventy-four thousand, six hundred fifty-six".