21441014552 has 32 divisors (see below), whose sum is σ = 41958708480. Its totient is φ = 10252223520.

The previous prime is 21441014503. The next prime is 21441014557. The reversal of 21441014552 is 25541014412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441014557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157927 + ... + 1176297.

It is an arithmetic number, because the mean of its divisors is an integer number (1311209640).

Almost surely, 2^21441014552 is an apocalyptic number.

It is an amenable number.

21441014552 is a deficient number, since it is larger than the sum of its proper divisors (20517693928).

21441014552 is a wasteful number, since it uses less digits than its factorization.

21441014552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24743 (or 24739 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 21441014552 its reverse (25541014412), we get a palindrome (46982028964).

The spelling of 21441014552 in words is "twenty-one billion, four hundred forty-one million, fourteen thousand, five hundred fifty-two".