68578484728 has 16 divisors (see below), whose sum is σ = 138475786680. Its totient is φ = 31651608288.

The previous prime is 68578484719. The next prime is 68578484749. The reversal of 68578484728 is 82748487586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329704150 + ... + 329704357.

Almost surely, 2^68578484728 is an apocalyptic number.

It is an amenable number.

68578484728 is an abundant number, since it is smaller than the sum of its proper divisors (69897301952).

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

68578484728 is a wasteful number, since it uses less digits than its factorization.

68578484728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659408526 (or 659408522 counting only the distinct ones).

The product of its digits is 192675840, while the sum is 67.

The spelling of 68578484728 in words is "sixty-eight billion, five hundred seventy-eight million, four hundred eighty-four thousand, seven hundred twenty-eight".