13440133233 has 12 divisors (see below), whose sum is σ = 19731781108. Its totient is φ = 8813201760.

The previous prime is 13440133229. The next prime is 13440133243. The reversal of 13440133233 is 33233104431.

It can be written as a sum of positive squares in 2 ways, for example, as 133818624 + 13306314609 = 11568^2 + 115353^2 .

It is not a de Polignac number, because 13440133233 - 2² = 13440133229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13440133197 and 13440133206.

It is not an unprimeable number, because it can be changed into a prime (13440133243) 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, 12240010 + ... + 12241107.

Almost surely, 2^13440133233 is an apocalyptic number.

It is an amenable number.

13440133233 is a deficient number, since it is larger than the sum of its proper divisors (6291647875).

13440133233 is a wasteful number, since it uses less digits than its factorization.

13440133233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24481184 (or 24481181 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 13440133233 its reverse (33233104431), we get a palindrome (46673237664).

The spelling of 13440133233 in words is "thirteen billion, four hundred forty million, one hundred thirty-three thousand, two hundred thirty-three".