21441450204 has 72 divisors (see below), whose sum is σ = 55973578752. Its totient is φ = 6913383840.

The previous prime is 21441450187. The next prime is 21441450227. The reversal of 21441450204 is 40205414412.

21441450204 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 1 + 450 + 204 = 666.

It is a super-2 number, since 2×21441450204² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4040617 + ... + 4045919.

It is an arithmetic number, because the mean of its divisors is an integer number (777410816).

Almost surely, 2^21441450204 is an apocalyptic number.

It is an amenable number.

21441450204 is an abundant number, since it is smaller than the sum of its proper divisors (34532128548).

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

21441450204 is a wasteful number, since it uses less digits than its factorization.

21441450204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8967 (or 8962 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 21441450204 its reverse (40205414412), we get a palindrome (61646864616).

The spelling of 21441450204 in words is "twenty-one billion, four hundred forty-one million, four hundred fifty thousand, two hundred four".