213055440453 has 16 divisors (see below), whose sum is σ = 315689500800. Its totient is φ = 142013645280.

The previous prime is 213055440397. The next prime is 213055440469. The reversal of 213055440453 is 354044550312.

213055440453 is a `hidden beast` number, since 2 + 13 + 0 + 554 + 40 + 4 + 53 = 666.

It is not a de Polignac number, because 213055440453 - 2⁹ = 213055439941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213055440953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479313 + ... + 809846.

It is an arithmetic number, because the mean of its divisors is an integer number (19730593800).

Almost surely, 2^213055440453 is an apocalyptic number.

It is an amenable number.

213055440453 is a deficient number, since it is larger than the sum of its proper divisors (102634060347).

213055440453 is a wasteful number, since it uses less digits than its factorization.

213055440453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295289 (or 1295283 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 213055440453 its reverse (354044550312), we get a palindrome (567099990765).

The spelling of 213055440453 in words is "two hundred thirteen billion, fifty-five million, four hundred forty thousand, four hundred fifty-three".