16210721204 has 12 divisors (see below), whose sum is σ = 29060683428. Its totient is φ = 7907668800.

The previous prime is 16210721203. The next prime is 16210721251. The reversal of 16210721204 is 40212701261.

It can be written as a sum of positive squares in 2 ways, for example, as 347822500 + 15862898704 = 18650^2 + 125948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16210721203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49422767 + ... + 49423094.

It is an arithmetic number, because the mean of its divisors is an integer number (2421723619).

Almost surely, 2^16210721204 is an apocalyptic number.

It is an amenable number.

16210721204 is a deficient number, since it is larger than the sum of its proper divisors (12849962224).

16210721204 is a wasteful number, since it uses less digits than its factorization.

16210721204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98845906 (or 98845904 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The spelling of 16210721204 in words is "sixteen billion, two hundred ten million, seven hundred twenty-one thousand, two hundred four".