428663818202 has 8 divisors (see below), whose sum is σ = 643050714612. Its totient is φ = 214313580000.

The previous prime is 428663818181. The next prime is 428663818243. The reversal of 428663818202 is 202818366824.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 421965868921 + 6697949281 = 649589^2 + 81841^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9135299 + ... + 9182102.

Almost surely, 2^428663818202 is an apocalyptic number.

428663818202 is a deficient number, since it is larger than the sum of its proper divisors (214386896410).

428663818202 is a wasteful number, since it uses less digits than its factorization.

428663818202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329104.

The product of its (nonzero) digits is 1769472, while the sum is 50.

The spelling of 428663818202 in words is "four hundred twenty-eight billion, six hundred sixty-three million, eight hundred eighteen thousand, two hundred two".