53443051213 has 4 divisors (see below), whose sum is σ = 53851013568. Its totient is φ = 53035088860.

The previous prime is 53443051187. The next prime is 53443051243. The reversal of 53443051213 is 31215034435.

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 53443051213 - 2³³ = 44853116621 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 (53443051243) 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, 203980981 + ... + 203981242.

It is an arithmetic number, because the mean of its divisors is an integer number (13462753392).

Almost surely, 2^53443051213 is an apocalyptic number.

It is an amenable number.

53443051213 is a deficient number, since it is larger than the sum of its proper divisors (407962355).

53443051213 is a wasteful number, since it uses less digits than its factorization.

53443051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407962354.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 53443051213 its reverse (31215034435), we get a palindrome (84658085648).

The spelling of 53443051213 in words is "fifty-three billion, four hundred forty-three million, fifty-one thousand, two hundred thirteen".