68460943640 has 32 divisors (see below), whose sum is σ = 162144342000. Its totient is φ = 25943094144.

The previous prime is 68460943589. The next prime is 68460943669. The reversal of 68460943640 is 4634906486.

It is a happy number.

68460943640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 45039335 + ... + 45040854.

Almost surely, 2^68460943640 is an apocalyptic number.

It is an amenable number.

68460943640 is an abundant number, since it is smaller than the sum of its proper divisors (93683398360).

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

68460943640 is a wasteful number, since it uses less digits than its factorization.

68460943640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90080219 (or 90080215 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 68460943640 in words is "sixty-eight billion, four hundred sixty million, nine hundred forty-three thousand, six hundred forty".