13500644333 has 12 divisors (see below), whose sum is σ = 15712468380. Its totient is φ = 11551351680.

The previous prime is 13500644321. The next prime is 13500644347. The reversal of 13500644333 is 33344600531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10982411209 + 2518233124 = 104797^2 + 50182^2 .

It is not a de Polignac number, because 13500644333 - 2²⁰ = 13499595757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13500644333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500644363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3279578 + ... + 3283691.

It is an arithmetic number, because the mean of its divisors is an integer number (1309372365).

Almost surely, 2^13500644333 is an apocalyptic number.

It is an amenable number.

13500644333 is a deficient number, since it is larger than the sum of its proper divisors (2211824047).

13500644333 is a wasteful number, since it uses less digits than its factorization.

13500644333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563308 (or 6563297 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

The spelling of 13500644333 in words is "thirteen billion, five hundred million, six hundred forty-four thousand, three hundred thirty-three".