11429534581 has 2 divisors, whose sum is σ = 11429534582. Its totient is φ = 11429534580.

The previous prime is 11429534573. The next prime is 11429534603. The reversal of 11429534581 is 18543592411.

11429534581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6523792900 + 4905741681 = 80770^2 + 70041^2 .

It is a cyclic number.

It is not a de Polignac number, because 11429534581 - 2³ = 11429534573 is a prime.

It is a super-2 number, since 2×11429534581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11429534521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5714767290 + 5714767291.

It is an arithmetic number, because the mean of its divisors is an integer number (5714767291).

Almost surely, 2^11429534581 is an apocalyptic number.

It is an amenable number.

11429534581 is a deficient number, since it is larger than the sum of its proper divisors (1).

11429534581 is an equidigital number, since it uses as much as digits as its factorization.

11429534581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 43.

The spelling of 11429534581 in words is "eleven billion, four hundred twenty-nine million, five hundred thirty-four thousand, five hundred eighty-one".