13440450133 has 16 divisors (see below), whose sum is σ = 15068585664. Its totient is φ = 11880466560.

The previous prime is 13440450103. The next prime is 13440450157. The reversal of 13440450133 is 33105404431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13440450133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440450103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652041 + ... + 672337.

It is an arithmetic number, because the mean of its divisors is an integer number (941786604).

Almost surely, 2^13440450133 is an apocalyptic number.

It is an amenable number.

13440450133 is a deficient number, since it is larger than the sum of its proper divisors (1628135531).

13440450133 is a wasteful number, since it uses less digits than its factorization.

13440450133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21972.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 13440450133 its reverse (33105404431), we get a palindrome (46545854564).

The spelling of 13440450133 in words is "thirteen billion, four hundred forty million, four hundred fifty thousand, one hundred thirty-three".