553205243443 has 4 divisors (see below), whose sum is σ = 553476557520. Its totient is φ = 552933929368.

The previous prime is 553205243413. The next prime is 553205243477. The reversal of 553205243443 is 344342502355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 553205243443 - 2²¹ = 553203146291 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 553205243396 and 553205243405.

It is not an unprimeable number, because it can be changed into a prime (553205243413) 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, 135653980 + ... + 135658057.

It is an arithmetic number, because the mean of its divisors is an integer number (138369139380).

Almost surely, 2^553205243443 is an apocalyptic number.

553205243443 is a deficient number, since it is larger than the sum of its proper divisors (271314077).

553205243443 is a wasteful number, since it uses less digits than its factorization.

553205243443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271314076.

The product of its (nonzero) digits is 864000, while the sum is 40.

Adding to 553205243443 its reverse (344342502355), we get a palindrome (897547745798).

The spelling of 553205243443 in words is "five hundred fifty-three billion, two hundred five million, two hundred forty-three thousand, four hundred forty-three".