42808686428 has 12 divisors (see below), whose sum is σ = 78172384080. Its totient is φ = 20473719552.

The previous prime is 42808686419. The next prime is 42808686443. The reversal of 42808686428 is 82468680824.

It is a happy number.

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, 232655813 + ... + 232655996.

It is an arithmetic number, because the mean of its divisors is an integer number (6514365340).

Almost surely, 2^42808686428 is an apocalyptic number.

It is an amenable number.

42808686428 is a deficient number, since it is larger than the sum of its proper divisors (35363697652).

42808686428 is a wasteful number, since it uses less digits than its factorization.

42808686428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465311836 (or 465311834 counting only the distinct ones).

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

The spelling of 42808686428 in words is "forty-two billion, eight hundred eight million, six hundred eighty-six thousand, four hundred twenty-eight".