21444020053410 has 64 divisors (see below), whose sum is σ = 54177642011520. Its totient is φ = 5417109089280.

The previous prime is 21444020053373. The next prime is 21444020053433. The reversal of 21444020053410 is 1435002044412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8367754 + ... + 10625786.

It is an arithmetic number, because the mean of its divisors is an integer number (846525656430).

Almost surely, 2^{21444020053410} is an apocalyptic number.

21444020053410 is an abundant number, since it is smaller than the sum of its proper divisors (32733621958110).

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

21444020053410 is a wasteful number, since it uses less digits than its factorization.

21444020053410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274723.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 21444020053410 its reverse (1435002044412), we get a palindrome (22879022097822).

The spelling of 21444020053410 in words is "twenty-one trillion, four hundred forty-four billion, twenty million, fifty-three thousand, four hundred ten".