68442684660 has 72 divisors (see below), whose sum is σ = 237267977856. Its totient is φ = 15644041920.

The previous prime is 68442684613. The next prime is 68442684671. The reversal of 68442684660 is 6648624486.

68442684660 is a `hidden beast` number, since 6 + 84 + 42 + 68 + 466 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68442684597 and 68442684606.

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, 27158536 + ... + 27161055.

Almost surely, 2^68442684660 is an apocalyptic number.

68442684660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68442684660 is an abundant number, since it is smaller than the sum of its proper divisors (168825293196).

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

68442684660 is a wasteful number, since it uses less digits than its factorization.

68442684660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54319613 (or 54319608 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 54.

The spelling of 68442684660 in words is "sixty-eight billion, four hundred forty-two million, six hundred eighty-four thousand, six hundred sixty".