53218509632429 has 2 divisors, whose sum is σ = 53218509632430. Its totient is φ = 53218509632428.

The previous prime is 53218509632411. The next prime is 53218509632441. The reversal of 53218509632429 is 92423690581235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42880259083204 + 10338250549225 = 6548302^2 + 3215315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53218509632429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53218509632129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26609254816214 + 26609254816215.

It is an arithmetic number, because the mean of its divisors is an integer number (26609254816215).

Almost surely, 2^{53218509632429} is an apocalyptic number.

It is an amenable number.

53218509632429 is a deficient number, since it is larger than the sum of its proper divisors (1).

53218509632429 is an equidigital number, since it uses as much as digits as its factorization.

53218509632429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 53218509632429 in words is "fifty-three trillion, two hundred eighteen billion, five hundred nine million, six hundred thirty-two thousand, four hundred twenty-nine".