21443505200023 has 8 divisors (see below), whose sum is σ = 21447986282496. Its totient is φ = 21439024588800.

The previous prime is 21443505200021. The next prime is 21443505200041. The reversal of 21443505200023 is 32000250534412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21443505200023 - 2¹ = 21443505200021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21443505200021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99503115 + ... + 99718387.

It is an arithmetic number, because the mean of its divisors is an integer number (2680998285312).

Almost surely, 2^{21443505200023} is an apocalyptic number.

21443505200023 is a deficient number, since it is larger than the sum of its proper divisors (4481082473).

21443505200023 is a wasteful number, since it uses less digits than its factorization.

21443505200023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235625.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 21443505200023 its reverse (32000250534412), we get a palindrome (53443755734435).

The spelling of 21443505200023 in words is "twenty-one trillion, four hundred forty-three billion, five hundred five million, two hundred thousand, twenty-three".