53203420353 has 4 divisors (see below), whose sum is σ = 70937893808. Its totient is φ = 35468946900.

The previous prime is 53203420331. The next prime is 53203420357. The reversal of 53203420353 is 35302430235.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53203420353 - 2¹⁰ = 53203419329 is a prime.

It is a super-3 number, since 3×53203420353³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53203420353.

It is not an unprimeable number, because it can be changed into a prime (53203420357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8867236723 + ... + 8867236728.

It is an arithmetic number, because the mean of its divisors is an integer number (17734473452).

Almost surely, 2^53203420353 is an apocalyptic number.

It is an amenable number.

53203420353 is a deficient number, since it is larger than the sum of its proper divisors (17734473455).

53203420353 is a wasteful number, since it uses less digits than its factorization.

53203420353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17734473454.

The product of its (nonzero) digits is 32400, while the sum is 30.

Adding to 53203420353 its reverse (35302430235), we get a palindrome (88505850588).

The spelling of 53203420353 in words is "fifty-three billion, two hundred three million, four hundred twenty thousand, three hundred fifty-three".