428578636536 has 96 divisors (see below), whose sum is σ = 1221967952400. Its totient is φ = 135324794880.

The previous prime is 428578636511. The next prime is 428578636583. The reversal of 428578636536 is 635636875824.

428578636536 is a `hidden beast` number, since 4 + 2 + 8 + 578 + 6 + 3 + 6 + 53 + 6 = 666.

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, 18589176 + ... + 18612216.

Almost surely, 2^428578636536 is an apocalyptic number.

It is an amenable number.

428578636536 is an abundant number, since it is smaller than the sum of its proper divisors (793389315864).

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

428578636536 is a wasteful number, since it uses less digits than its factorization.

428578636536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36669 (or 36662 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 63.

The spelling of 428578636536 in words is "four hundred twenty-eight billion, five hundred seventy-eight million, six hundred thirty-six thousand, five hundred thirty-six".