16663500426 has 8 divisors (see below), whose sum is σ = 33327000864. Its totient is φ = 5554500140.

The previous prime is 16663500409. The next prime is 16663500467. The reversal of 16663500426 is 62400536661.

16663500426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

16663500426 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388625030 + ... + 1388625041.

It is an arithmetic number, because the mean of its divisors is an integer number (4165875108).

Almost surely, 2^16663500426 is an apocalyptic number.

16663500426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16663500426 is a wasteful number, since it uses less digits than its factorization.

16663500426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777250076.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 16663500426 in words is "sixteen billion, six hundred sixty-three million, five hundred thousand, four hundred twenty-six".