428815323563 has 16 divisors (see below), whose sum is σ = 483186232320. Its totient is φ = 377024522400.

The previous prime is 428815323551. The next prime is 428815323589. The reversal of 428815323563 is 365323518824.

It is a cyclic number.

It is not a de Polignac number, because 428815323563 - 2¹⁰ = 428815322539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428815323593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168353 + ... + 941261.

It is an arithmetic number, because the mean of its divisors is an integer number (30199139520).

Almost surely, 2^428815323563 is an apocalyptic number.

428815323563 is a deficient number, since it is larger than the sum of its proper divisors (54370908757).

428815323563 is a wasteful number, since it uses less digits than its factorization.

428815323563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774578.

The product of its digits is 4147200, while the sum is 50.

The spelling of 428815323563 in words is "four hundred twenty-eight billion, eight hundred fifteen million, three hundred twenty-three thousand, five hundred sixty-three".