12087710948581 has 2 divisors, whose sum is σ = 12087710948582. Its totient is φ = 12087710948580.

The previous prime is 12087710948513. The next prime is 12087710948627. The reversal of 12087710948581 is 18584901778021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11436510367681 + 651200580900 = 3381791^2 + 806970^2 .

It is a cyclic number.

It is not a de Polignac number, because 12087710948581 - 2²⁹ = 12087174077669 is a prime.

It is a super-2 number, since 2×12087710948581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12087710948681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6043855474290 + 6043855474291.

It is an arithmetic number, because the mean of its divisors is an integer number (6043855474291).

Almost surely, 2^{12087710948581} is an apocalyptic number.

It is an amenable number.

12087710948581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12087710948581 is an equidigital number, since it uses as much as digits as its factorization.

12087710948581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9031680, while the sum is 61.

The spelling of 12087710948581 in words is "twelve trillion, eighty-seven billion, seven hundred ten million, nine hundred forty-eight thousand, five hundred eighty-one".