16643311426 has 24 divisors (see below), whose sum is σ = 28582497216. Its totient is φ = 7120090920.

The previous prime is 16643311409. The next prime is 16643311453. The reversal of 16643311426 is 62411334661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11014011 + ... + 11015521.

It is an arithmetic number, because the mean of its divisors is an integer number (1190937384).

Almost surely, 2^16643311426 is an apocalyptic number.

16643311426 is a deficient number, since it is larger than the sum of its proper divisors (11939185790).

16643311426 is an frugal number, since it uses more digits than its factorization.

16643311426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294 (or 2407 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The spelling of 16643311426 in words is "sixteen billion, six hundred forty-three million, three hundred eleven thousand, four hundred twenty-six".