11638562329 has 2 divisors, whose sum is σ = 11638562330. Its totient is φ = 11638562328.

The previous prime is 11638562311. The next prime is 11638562333. The reversal of 11638562329 is 92326583611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11631191104 + 7371225 = 107848^2 + 2715^2 .

It is a cyclic number.

It is not a de Polignac number, because 11638562329 - 2⁹ = 11638561817 is a prime.

It is a super-2 number, since 2×11638562329² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11638568329) 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, 5819281164 + 5819281165.

It is an arithmetic number, because the mean of its divisors is an integer number (5819281165).

Almost surely, 2^11638562329 is an apocalyptic number.

It is an amenable number.

11638562329 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638562329 is an equidigital number, since it uses as much as digits as its factorization.

11638562329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The spelling of 11638562329 in words is "eleven billion, six hundred thirty-eight million, five hundred sixty-two thousand, three hundred twenty-nine".