13143120533 has 4 divisors (see below), whose sum is σ = 13159130028. Its totient is φ = 13127111040.

The previous prime is 13143120527. The next prime is 13143120547. The reversal of 13143120533 is 33502134131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1492508689 + 11650611844 = 38633^2 + 107938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13143120533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143120503) 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, 8003516 + ... + 8005157.

It is an arithmetic number, because the mean of its divisors is an integer number (3289782507).

Almost surely, 2^13143120533 is an apocalyptic number.

It is an amenable number.

13143120533 is a deficient number, since it is larger than the sum of its proper divisors (16009495).

13143120533 is an equidigital number, since it uses as much as digits as its factorization.

13143120533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009494.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 13143120533 its reverse (33502134131), we get a palindrome (46645254664).

The spelling of 13143120533 in words is "thirteen billion, one hundred forty-three million, one hundred twenty thousand, five hundred thirty-three".