53631558521729 has 2 divisors, whose sum is σ = 53631558521730. Its totient is φ = 53631558521728.

The previous prime is 53631558521713. The next prime is 53631558521759. The reversal of 53631558521729 is 92712585513635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45498424543504 + 8133133978225 = 6745252^2 + 2851865^2 .

It is a cyclic number.

It is not a de Polignac number, because 53631558521729 - 2⁴ = 53631558521713 is a prime.

It is not a weakly prime, because it can be changed into another prime (53631558521759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26815779260864 + 26815779260865.

It is an arithmetic number, because the mean of its divisors is an integer number (26815779260865).

Almost surely, 2^{53631558521729} is an apocalyptic number.

It is an amenable number.

53631558521729 is a deficient number, since it is larger than the sum of its proper divisors (1).

53631558521729 is an equidigital number, since it uses as much as digits as its factorization.

53631558521729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040000, while the sum is 62.

The spelling of 53631558521729 in words is "fifty-three trillion, six hundred thirty-one billion, five hundred fifty-eight million, five hundred twenty-one thousand, seven hundred twenty-nine".