68456585004864 has 56 divisors (see below), whose sum is σ = 206999673709248. Its totient is φ = 19559024286720.

The previous prime is 68456585004859. The next prime is 68456585004883. The reversal of 68456585004864 is 46840058565486.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25467478197 + ... + 25467480884.

It is an arithmetic number, because the mean of its divisors is an integer number (3696422744808).

Almost surely, 2^{68456585004864} is an apocalyptic number.

68456585004864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68456585004864 is an abundant number, since it is smaller than the sum of its proper divisors (138543088704384).

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

68456585004864 is a wasteful number, since it uses less digits than its factorization.

68456585004864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50934959103 (or 50934959093 counting only the distinct ones).

The product of its (nonzero) digits is 884736000, while the sum is 69.

The spelling of 68456585004864 in words is "sixty-eight trillion, four hundred fifty-six billion, five hundred eighty-five million, four thousand, eight hundred sixty-four".