16643163254 has 16 divisors (see below), whose sum is σ = 25790175360. Its totient is φ = 8046857280.

The previous prime is 16643163253. The next prime is 16643163263. The reversal of 16643163254 is 45236134661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16643163253) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24209 + ... + 184044.

It is an arithmetic number, because the mean of its divisors is an integer number (1611885960).

Almost surely, 2^16643163254 is an apocalyptic number.

16643163254 is a deficient number, since it is larger than the sum of its proper divisors (9147012106).

16643163254 is a wasteful number, since it uses less digits than its factorization.

16643163254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209575.

The product of its digits is 311040, while the sum is 41.

The spelling of 16643163254 in words is "sixteen billion, six hundred forty-three million, one hundred sixty-three thousand, two hundred fifty-four".