11958823529 has 2 divisors, whose sum is σ = 11958823530. Its totient is φ = 11958823528.

The previous prime is 11958823489. The next prime is 11958823603. The reversal of 11958823529 is 92532885911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11254027225 + 704796304 = 106085^2 + 26548^2 .

It is an emirp because it is prime and its reverse (92532885911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11958823529 - 2⁸ = 11958823273 is a prime.

It is not a weakly prime, because it can be changed into another prime (11958820529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5979411764 + 5979411765.

It is an arithmetic number, because the mean of its divisors is an integer number (5979411765).

Almost surely, 2^11958823529 is an apocalyptic number.

It is an amenable number.

11958823529 is a deficient number, since it is larger than the sum of its proper divisors (1).

11958823529 is an equidigital number, since it uses as much as digits as its factorization.

11958823529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 53.

The spelling of 11958823529 in words is "eleven billion, nine hundred fifty-eight million, eight hundred twenty-three thousand, five hundred twenty-nine".