13353520553521 has 2 divisors, whose sum is σ = 13353520553522. Its totient is φ = 13353520553520.

The previous prime is 13353520553489. The next prime is 13353520553557. The reversal of 13353520553521 is 12535502535331.

13353520553521 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., 11550312030625 + 1803208522896 = 3398575^2 + 1342836^2 .

It is a cyclic number.

It is not a de Polignac number, because 13353520553521 - 2⁵ = 13353520553489 is a prime.

It is a super-2 number, since 2×13353520553521² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13353520553591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6676760276760 + 6676760276761.

It is an arithmetic number, because the mean of its divisors is an integer number (6676760276761).

Almost surely, 2^{13353520553521} is an apocalyptic number.

It is an amenable number.

13353520553521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13353520553521 is an equidigital number, since it uses as much as digits as its factorization.

13353520553521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1012500, while the sum is 43.

The spelling of 13353520553521 in words is "thirteen trillion, three hundred fifty-three billion, five hundred twenty million, five hundred fifty-three thousand, five hundred twenty-one".