68321504844 has 36 divisors (see below), whose sum is σ = 181791140440. Its totient is φ = 21575211840.

The previous prime is 68321504819. The next prime is 68321504921. The reversal of 68321504844 is 44840512386.

68321504844 is a `hidden beast` number, since 6 + 83 + 21 + 504 + 8 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68321504844.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49941937 + ... + 49943304.

Almost surely, 2^68321504844 is an apocalyptic number.

It is an amenable number.

68321504844 is an abundant number, since it is smaller than the sum of its proper divisors (113469635596).

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

68321504844 is a wasteful number, since it uses less digits than its factorization.

68321504844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99885270 (or 99885265 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 68321504844 in words is "sixty-eight billion, three hundred twenty-one million, five hundred four thousand, eight hundred forty-four".