11644454033 has 4 divisors (see below), whose sum is σ = 11645539380. Its totient is φ = 11643368688.

The previous prime is 11644454021. The next prime is 11644454039. The reversal of 11644454033 is 33045444611.

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 1040191504 + 10604262529 = 32252^2 + 102977^2 .

It is a cyclic number.

It is not a de Polignac number, because 11644454033 - 2¹² = 11644449937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11644453984 and 11644454002.

It is not an unprimeable number, because it can be changed into a prime (11644454039) 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, 526418 + ... + 548091.

It is an arithmetic number, because the mean of its divisors is an integer number (2911384845).

Almost surely, 2^11644454033 is an apocalyptic number.

It is an amenable number.

11644454033 is a deficient number, since it is larger than the sum of its proper divisors (1085347).

11644454033 is a wasteful number, since it uses less digits than its factorization.

11644454033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085346.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 11644454033 its reverse (33045444611), we get a palindrome (44689898644).

The spelling of 11644454033 in words is "eleven billion, six hundred forty-four million, four hundred fifty-four thousand, thirty-three".