523453455650729 has 2 divisors, whose sum is σ = 523453455650730. Its totient is φ = 523453455650728.

The previous prime is 523453455650683. The next prime is 523453455650831. The reversal of 523453455650729 is 927056554354325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 517619467567504 + 5833988083225 = 22751252^2 + 2415365^2 .

It is a cyclic number.

It is not a de Polignac number, because 523453455650729 - 2²⁰ = 523453454602153 is a prime.

It is not a weakly prime, because it can be changed into another prime (523453455650029) 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, 261726727825364 + 261726727825365.

It is an arithmetic number, because the mean of its divisors is an integer number (261726727825365).

Almost surely, 2^{523453455650729} is an apocalyptic number.

It is an amenable number.

523453455650729 is a deficient number, since it is larger than the sum of its proper divisors (1).

523453455650729 is an equidigital number, since it uses as much as digits as its factorization.

523453455650729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400000, while the sum is 65.

The spelling of 523453455650729 in words is "five hundred twenty-three trillion, four hundred fifty-three billion, four hundred fifty-five million, six hundred fifty thousand, seven hundred twenty-nine".