12011554355417 has 2 divisors, whose sum is σ = 12011554355418. Its totient is φ = 12011554355416.

The previous prime is 12011554355407. The next prime is 12011554355459. The reversal of 12011554355417 is 71455345511021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11426725558336 + 584828797081 = 3380344^2 + 764741^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011554355417 - 2⁴ = 12011554355401 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011554355407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005777177708 + 6005777177709.

It is an arithmetic number, because the mean of its divisors is an integer number (6005777177709).

Almost surely, 2^{12011554355417} is an apocalyptic number.

It is an amenable number.

12011554355417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011554355417 is an equidigital number, since it uses as much as digits as its factorization.

12011554355417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420000, while the sum is 44.

Adding to 12011554355417 its reverse (71455345511021), we get a palindrome (83466899866438).

The spelling of 12011554355417 in words is "twelve trillion, eleven billion, five hundred fifty-four million, three hundred fifty-five thousand, four hundred seventeen".