205320065334431 has 2 divisors, whose sum is σ = 205320065334432. Its totient is φ = 205320065334430.

The previous prime is 205320065334409. The next prime is 205320065334437. The reversal of 205320065334431 is 134433560023502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205320065334431 - 2⁶ = 205320065334367 is a prime.

It is a super-2 number, since 2×205320065334431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205320065334437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102660032667215 + 102660032667216.

It is an arithmetic number, because the mean of its divisors is an integer number (102660032667216).

Almost surely, 2^{205320065334431} is an apocalyptic number.

205320065334431 is a deficient number, since it is larger than the sum of its proper divisors (1).

205320065334431 is an equidigital number, since it uses as much as digits as its factorization.

205320065334431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 41.

The spelling of 205320065334431 in words is "two hundred five trillion, three hundred twenty billion, sixty-five million, three hundred thirty-four thousand, four hundred thirty-one".