11452043381 has 2 divisors, whose sum is σ = 11452043382. Its totient is φ = 11452043380.

The previous prime is 11452043347. The next prime is 11452043389. The reversal of 11452043381 is 18334025411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8792062756 + 2659980625 = 93766^2 + 51575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11452043381 is a prime.

It is a super-2 number, since 2×11452043381² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11452043389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5726021690 + 5726021691.

It is an arithmetic number, because the mean of its divisors is an integer number (5726021691).

Almost surely, 2^11452043381 is an apocalyptic number.

It is an amenable number.

11452043381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11452043381 is an equidigital number, since it uses as much as digits as its factorization.

11452043381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 11452043381 its reverse (18334025411), we get a palindrome (29786068792).

The spelling of 11452043381 in words is "eleven billion, four hundred fifty-two million, forty-three thousand, three hundred eighty-one".