21441151404252 has 144 divisors (see below), whose sum is σ = 56321642168064. Its totient is φ = 7132333824000.

The previous prime is 21441151404227. The next prime is 21441151404293. The reversal of 21441151404252 is 25240415114412.

It is a happy number.

21441151404252 is a `hidden beast` number, since 2 + 1 + 4 + 41 + 151 + 40 + 425 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1439865727 + ... + 1439880617.

It is an arithmetic number, because the mean of its divisors is an integer number (391122515056).

Almost surely, 2^{21441151404252} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21441151404252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28160821084032).

21441151404252 is an abundant number, since it is smaller than the sum of its proper divisors (34880490763812).

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

21441151404252 is a wasteful number, since it uses less digits than its factorization.

21441151404252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17862 (or 17848 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

Adding to 21441151404252 its reverse (25240415114412), we get a palindrome (46681566518664).

The spelling of 21441151404252 in words is "twenty-one trillion, four hundred forty-one billion, one hundred fifty-one million, four hundred four thousand, two hundred fifty-two".