53243421453 has 12 divisors (see below), whose sum is σ = 77512734208. Its totient is φ = 35216120520.

The previous prime is 53243421449. The next prime is 53243421463. The reversal of 53243421453 is 35412434235.

53243421453 is a `hidden beast` number, since 5 + 3 + 2 + 434 + 214 + 5 + 3 = 666.

It is not a de Polignac number, because 53243421453 - 2² = 53243421449 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 (53243421433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23289943 + ... + 23292228.

Almost surely, 2^53243421453 is an apocalyptic number.

It is an amenable number.

53243421453 is a deficient number, since it is larger than the sum of its proper divisors (24269312755).

53243421453 is a wasteful number, since it uses less digits than its factorization.

53243421453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46582304 (or 46582301 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

Adding to 53243421453 its reverse (35412434235), we get a palindrome (88655855688).

The spelling of 53243421453 in words is "fifty-three billion, two hundred forty-three million, four hundred twenty-one thousand, four hundred fifty-three".