53606923218521 has 2 divisors, whose sum is σ = 53606923218522. Its totient is φ = 53606923218520.

The previous prime is 53606923218509. The next prime is 53606923218617. The reversal of 53606923218521 is 12581232960635.

53606923218521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52807036254025 + 799886964496 = 7266845^2 + 894364^2 .

It is a cyclic number.

It is not a de Polignac number, because 53606923218521 - 2¹⁴ = 53606923202137 is a prime.

It is not a weakly prime, because it can be changed into another prime (53606923218221) 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, 26803461609260 + 26803461609261.

It is an arithmetic number, because the mean of its divisors is an integer number (26803461609261).

Almost surely, 2^{53606923218521} is an apocalyptic number.

It is an amenable number.

53606923218521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53606923218521 is an equidigital number, since it uses as much as digits as its factorization.

53606923218521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 53606923218521 in words is "fifty-three trillion, six hundred six billion, nine hundred twenty-three million, two hundred eighteen thousand, five hundred twenty-one".