11641443539 has 4 divisors (see below), whose sum is σ = 12699756600. Its totient is φ = 10583130480.

The previous prime is 11641443521. The next prime is 11641443553. The reversal of 11641443539 is 93534414611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11641443539 - 2²⁰ = 11640394963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11641443496 and 11641443505.

It is not an unprimeable number, because it can be changed into a prime (11641443509) 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, 529156514 + ... + 529156535.

It is an arithmetic number, because the mean of its divisors is an integer number (3174939150).

Almost surely, 2^11641443539 is an apocalyptic number.

11641443539 is a deficient number, since it is larger than the sum of its proper divisors (1058313061).

11641443539 is a wasteful number, since it uses less digits than its factorization.

11641443539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058313060.

The product of its digits is 155520, while the sum is 41.

The spelling of 11641443539 in words is "eleven billion, six hundred forty-one million, four hundred forty-three thousand, five hundred thirty-nine".