53343211421 has 4 divisors (see below), whose sum is σ = 53363185344. Its totient is φ = 53323237500.

The previous prime is 53343211387. The next prime is 53343211487. The reversal of 53343211421 is 12411234335.

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 a cyclic number.

It is not a de Polignac number, because 53343211421 - 2³⁰ = 52269469597 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 (53343261421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9982955 + ... + 9988296.

It is an arithmetic number, because the mean of its divisors is an integer number (13340796336).

Almost surely, 2^53343211421 is an apocalyptic number.

It is an amenable number.

53343211421 is a deficient number, since it is larger than the sum of its proper divisors (19973923).

53343211421 is a wasteful number, since it uses less digits than its factorization.

53343211421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19973922.

The product of its digits is 8640, while the sum is 29.

Adding to 53343211421 its reverse (12411234335), we get a palindrome (65754445756).

The spelling of 53343211421 in words is "fifty-three billion, three hundred forty-three million, two hundred eleven thousand, four hundred twenty-one".