13515542243129 has 2 divisors, whose sum is σ = 13515542243130. Its totient is φ = 13515542243128.

The previous prime is 13515542243107. The next prime is 13515542243173. The reversal of 13515542243129 is 92134224551531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13506712821904 + 8829421225 = 3675148^2 + 93965^2 .

It is an emirp because it is prime and its reverse (92134224551531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13515542243129 - 2⁴⁰ = 12416030615353 is a prime.

It is not a weakly prime, because it can be changed into another prime (13515542249129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6757771121564 + 6757771121565.

It is an arithmetic number, because the mean of its divisors is an integer number (6757771121565).

Almost surely, 2^{13515542243129} is an apocalyptic number.

It is an amenable number.

13515542243129 is a deficient number, since it is larger than the sum of its proper divisors (1).

13515542243129 is an equidigital number, since it uses as much as digits as its factorization.

13515542243129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296000, while the sum is 47.

The spelling of 13515542243129 in words is "thirteen trillion, five hundred fifteen billion, five hundred forty-two million, two hundred forty-three thousand, one hundred twenty-nine".