11644348907 has 4 divisors (see below), whose sum is σ = 11656884120. Its totient is φ = 11631813696.

The previous prime is 11644348879. The next prime is 11644348927. The reversal of 11644348907 is 70984344611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70984344611 = 17 ⋅4175549683.

It is a cyclic number.

It is not a de Polignac number, because 11644348907 - 2²⁴ = 11627571691 is a prime.

It is a super-3 number, since 3×11644348907³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11644348927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6266213 + ... + 6268070.

It is an arithmetic number, because the mean of its divisors is an integer number (2914221030).

Almost surely, 2^11644348907 is an apocalyptic number.

11644348907 is a deficient number, since it is larger than the sum of its proper divisors (12535213).

11644348907 is an equidigital number, since it uses as much as digits as its factorization.

11644348907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12535212.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 11644348907 in words is "eleven billion, six hundred forty-four million, three hundred forty-eight thousand, nine hundred seven".