12069129581 has 2 divisors, whose sum is σ = 12069129582. Its totient is φ = 12069129580.

The previous prime is 12069129509. The next prime is 12069129613. The reversal of 12069129581 is 18592196021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11781148681 + 287980900 = 108541^2 + 16970^2 .

It is a cyclic number.

It is not a de Polignac number, because 12069129581 - 2¹⁴ = 12069113197 is a prime.

It is a super-2 number, since 2×12069129581² (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 (12069123581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6034564790 + 6034564791.

It is an arithmetic number, because the mean of its divisors is an integer number (6034564791).

Almost surely, 2^12069129581 is an apocalyptic number.

It is an amenable number.

12069129581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12069129581 is an equidigital number, since it uses as much as digits as its factorization.

12069129581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 12069129581 in words is "twelve billion, sixty-nine million, one hundred twenty-nine thousand, five hundred eighty-one".