428616021580 has 12 divisors (see below), whose sum is σ = 900093645360. Its totient is φ = 171446408624.

The previous prime is 428616021497. The next prime is 428616021593. The reversal of 428616021580 is 85120616824.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10715400520 + ... + 10715400559.

It is an arithmetic number, because the mean of its divisors is an integer number (75007803780).

Almost surely, 2^428616021580 is an apocalyptic number.

It is an amenable number.

428616021580 is an abundant number, since it is smaller than the sum of its proper divisors (471477623780).

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

428616021580 is a wasteful number, since it uses less digits than its factorization.

428616021580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21430801088 (or 21430801086 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 428616021580 in words is "four hundred twenty-eight billion, six hundred sixteen million, twenty-one thousand, five hundred eighty".