68460844880 has 20 divisors (see below), whose sum is σ = 159171464532. Its totient is φ = 27384337920.

The previous prime is 68460844843. The next prime is 68460844919. The reversal of 68460844880 is 8844806486.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50045269264 + 18415575616 = 223708^2 + 135704^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427880201 + ... + 427880360.

Almost surely, 2^68460844880 is an apocalyptic number.

It is an amenable number.

68460844880 is an abundant number, since it is smaller than the sum of its proper divisors (90710619652).

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

68460844880 is a wasteful number, since it uses less digits than its factorization.

68460844880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855760574 (or 855760568 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 56.

The spelling of 68460844880 in words is "sixty-eight billion, four hundred sixty million, eight hundred forty-four thousand, eight hundred eighty".