15643430200897 has 2 divisors, whose sum is σ = 15643430200898. Its totient is φ = 15643430200896.

The previous prime is 15643430200843. The next prime is 15643430200901. The reversal of 15643430200897 is 79800203434651.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15296828365456 + 346601835441 = 3911116^2 + 588729^2 .

It is a cyclic number.

It is not a de Polignac number, because 15643430200897 - 2¹¹ = 15643430198849 is a prime.

It is not a weakly prime, because it can be changed into another prime (15643430200597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7821715100448 + 7821715100449.

It is an arithmetic number, because the mean of its divisors is an integer number (7821715100449).

It is a 1-persistent number, because it is pandigital, but 2⋅15643430200897 = 31286860401794 is not.

Almost surely, 2^{15643430200897} is an apocalyptic number.

It is an amenable number.

15643430200897 is a deficient number, since it is larger than the sum of its proper divisors (1).

15643430200897 is an equidigital number, since it uses as much as digits as its factorization.

15643430200897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 15643430200897 in words is "fifteen trillion, six hundred forty-three billion, four hundred thirty million, two hundred thousand, eight hundred ninety-seven".