12011529553 has 2 divisors, whose sum is σ = 12011529554. Its totient is φ = 12011529552.

The previous prime is 12011529463. The next prime is 12011529601. The reversal of 12011529553 is 35592511021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10756386369 + 1255143184 = 103713^2 + 35428^2 .

It is an emirp because it is prime and its reverse (35592511021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011529553 - 2¹⁷ = 12011398481 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011521553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005764776 + 6005764777.

It is an arithmetic number, because the mean of its divisors is an integer number (6005764777).

Almost surely, 2^12011529553 is an apocalyptic number.

It is an amenable number.

12011529553 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011529553 is an equidigital number, since it uses as much as digits as its factorization.

12011529553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 12011529553 in words is "twelve billion, eleven million, five hundred twenty-nine thousand, five hundred fifty-three".