428047880667 has 8 divisors (see below), whose sum is σ = 622615099200. Its totient is φ = 259422957960.

The previous prime is 428047880597. The next prime is 428047880677. The reversal of 428047880667 is 766088740824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428047880667 - 2¹⁰ = 428047879643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428047880667.

It is not an unprimeable number, because it can be changed into a prime (428047880677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6485573917 + ... + 6485573982.

It is an arithmetic number, because the mean of its divisors is an integer number (77826887400).

Almost surely, 2^428047880667 is an apocalyptic number.

428047880667 is a deficient number, since it is larger than the sum of its proper divisors (194567218533).

428047880667 is a wasteful number, since it uses less digits than its factorization.

428047880667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12971147913.

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 428047880667 in words is "four hundred twenty-eight billion, forty-seven million, eight hundred eighty thousand, six hundred sixty-seven".