11964238541 has 2 divisors, whose sum is σ = 11964238542. Its totient is φ = 11964238540.

The previous prime is 11964238511. The next prime is 11964238543. The reversal of 11964238541 is 14583246911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10491904900 + 1472333641 = 102430^2 + 38371^2 .

It is a cyclic number.

It is not a de Polignac number, because 11964238541 - 2¹⁸ = 11963976397 is a prime.

Together with 11964238543, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11964238492 and 11964238501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11964238543) 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 as a sum of consecutive naturals, namely, 5982119270 + 5982119271.

It is an arithmetic number, because the mean of its divisors is an integer number (5982119271).

Almost surely, 2^11964238541 is an apocalyptic number.

It is an amenable number.

11964238541 is a deficient number, since it is larger than the sum of its proper divisors (1).

11964238541 is an equidigital number, since it uses as much as digits as its factorization.

11964238541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The spelling of 11964238541 in words is "eleven billion, nine hundred sixty-four million, two hundred thirty-eight thousand, five hundred forty-one".