21414433204 has 6 divisors (see below), whose sum is σ = 37475258114. Its totient is φ = 10707216600.

The previous prime is 21414433169. The next prime is 21414433219. The reversal of 21414433204 is 40233441412.

It can be written as a sum of positive squares in only one way, i.e., 13367984400 + 8046448804 = 115620^2 + 89702^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2676804147 + ... + 2676804154.

Almost surely, 2^21414433204 is an apocalyptic number.

It is an amenable number.

21414433204 is a deficient number, since it is larger than the sum of its proper divisors (16060824910).

21414433204 is a wasteful number, since it uses less digits than its factorization.

21414433204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353608305 (or 5353608303 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21414433204 its reverse (40233441412), we get a palindrome (61647874616).

The spelling of 21414433204 in words is "twenty-one billion, four hundred fourteen million, four hundred thirty-three thousand, two hundred four".