428002680009 has 4 divisors (see below), whose sum is σ = 570670240016. Its totient is φ = 285335120004.

The previous prime is 428002679999. The next prime is 428002680023. The reversal of 428002680009 is 900086200824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 428002680009 - 2⁵ = 428002679977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428002680059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71333779999 + ... + 71333780004.

It is an arithmetic number, because the mean of its divisors is an integer number (142667560004).

Almost surely, 2^428002680009 is an apocalyptic number.

It is an amenable number.

428002680009 is a deficient number, since it is larger than the sum of its proper divisors (142667560007).

428002680009 is a wasteful number, since it uses less digits than its factorization.

428002680009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142667560006.

The product of its (nonzero) digits is 55296, while the sum is 39.

It can be divided in two parts, 428002 and 680009, that added together give a palindrome (1108011).

The spelling of 428002680009 in words is "four hundred twenty-eight billion, two million, six hundred eighty thousand, nine".