21454445353053 has 8 divisors (see below), whose sum is σ = 28667710999168. Its totient is φ = 14272071637824.

The previous prime is 21454445353031. The next prime is 21454445353109. The reversal of 21454445353053 is 35035354445412.

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

It is not a de Polignac number, because 21454445353053 - 2¹³ = 21454445344861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21454445352993 and 21454445353011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21454445353753) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7722981100 + ... + 7722983877.

It is an arithmetic number, because the mean of its divisors is an integer number (3583463874896).

Almost surely, 2^{21454445353053} is an apocalyptic number.

It is an amenable number.

21454445353053 is a deficient number, since it is larger than the sum of its proper divisors (7213265646115).

21454445353053 is a wasteful number, since it uses less digits than its factorization.

21454445353053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15445965443.

The product of its (nonzero) digits is 8640000, while the sum is 48.

Adding to 21454445353053 its reverse (35035354445412), we get a palindrome (56489799798465).

The spelling of 21454445353053 in words is "twenty-one trillion, four hundred fifty-four billion, four hundred forty-five million, three hundred fifty-three thousand, fifty-three".