428465512856 has 32 divisors (see below), whose sum is σ = 809328844800. Its totient is φ = 212645160480.

The previous prime is 428465512847. The next prime is 428465512897. The reversal of 428465512856 is 658215564824.

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, 5377001 + ... + 5456103.

It is an arithmetic number, because the mean of its divisors is an integer number (25291526400).

Almost surely, 2^428465512856 is an apocalyptic number.

It is an amenable number.

428465512856 is a deficient number, since it is larger than the sum of its proper divisors (380863331944).

428465512856 is a wasteful number, since it uses less digits than its factorization.

428465512856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84119 (or 84115 counting only the distinct ones).

The product of its digits is 18432000, while the sum is 56.

The spelling of 428465512856 in words is "four hundred twenty-eight billion, four hundred sixty-five million, five hundred twelve thousand, eight hundred fifty-six".