12546213561757 has 2 divisors, whose sum is σ = 12546213561758. Its totient is φ = 12546213561756.

The previous prime is 12546213561731. The next prime is 12546213561781. The reversal of 12546213561757 is 75716531264521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6329823255396 + 6216390306361 = 2515914^2 + 2493269^2 .

It is a cyclic number.

It is not a de Polignac number, because 12546213561757 - 2¹¹ = 12546213559709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12546213561698 and 12546213561707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12546213561727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273106780878 + 6273106780879.

It is an arithmetic number, because the mean of its divisors is an integer number (6273106780879).

Almost surely, 2^{12546213561757} is an apocalyptic number.

It is an amenable number.

12546213561757 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546213561757 is an equidigital number, since it uses as much as digits as its factorization.

12546213561757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584000, while the sum is 55.

The spelling of 12546213561757 in words is "twelve trillion, five hundred forty-six billion, two hundred thirteen million, five hundred sixty-one thousand, seven hundred fifty-seven".