428107205219 has 4 divisors (see below), whose sum is σ = 429095905896. Its totient is φ = 427118504544.

The previous prime is 428107205153. The next prime is 428107205221. The reversal of 428107205219 is 912502701824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428107205219 is a prime.

It is a super-2 number, since 2×428107205219² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428107205269) 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, 494349689 + ... + 494350554.

It is an arithmetic number, because the mean of its divisors is an integer number (107273976474).

Almost surely, 2^428107205219 is an apocalyptic number.

428107205219 is a deficient number, since it is larger than the sum of its proper divisors (988700677).

428107205219 is an equidigital number, since it uses as much as digits as its factorization.

428107205219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988700676.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 428107205219 in words is "four hundred twenty-eight billion, one hundred seven million, two hundred five thousand, two hundred nineteen".