428019409366 has 4 divisors (see below), whose sum is σ = 642029114052. Its totient is φ = 214009704682.

The previous prime is 428019409343. The next prime is 428019409381. The reversal of 428019409366 is 663904910824.

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

It is a super-2 number, since 2×428019409366² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 107004852340 + ... + 107004852343.

It is an arithmetic number, because the mean of its divisors is an integer number (160507278513).

Almost surely, 2^428019409366 is an apocalyptic number.

428019409366 is a deficient number, since it is larger than the sum of its proper divisors (214009704686).

428019409366 is a wasteful number, since it uses less digits than its factorization.

428019409366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214009704685.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 428019409366 in words is "four hundred twenty-eight billion, nineteen million, four hundred nine thousand, three hundred sixty-six".