12017452521757 has 2 divisors, whose sum is σ = 12017452521758. Its totient is φ = 12017452521756.

The previous prime is 12017452521719. The next prime is 12017452521769. The reversal of 12017452521757 is 75712525471021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11553874011801 + 463578509956 = 3399099^2 + 680866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12017452521757 is a prime.

It is a super-2 number, since 2×12017452521757² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12017452521757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12017452521707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6008726260878 + 6008726260879.

It is an arithmetic number, because the mean of its divisors is an integer number (6008726260879).

Almost surely, 2^{12017452521757} is an apocalyptic number.

It is an amenable number.

12017452521757 is a deficient number, since it is larger than the sum of its proper divisors (1).

12017452521757 is an equidigital number, since it uses as much as digits as its factorization.

12017452521757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1372000, while the sum is 49.

Adding to 12017452521757 its reverse (75712525471021), we get a palindrome (87729977992778).

The spelling of 12017452521757 in words is "twelve trillion, seventeen billion, four hundred fifty-two million, five hundred twenty-one thousand, seven hundred fifty-seven".