13531135537 has 2 divisors, whose sum is σ = 13531135538. Its totient is φ = 13531135536.

The previous prime is 13531135523. The next prime is 13531135591. The reversal of 13531135537 is 73553113531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8719077376 + 4812058161 = 93376^2 + 69369^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531135537 - 2¹⁵ = 13531102769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13531135496 and 13531135505.

It is not a weakly prime, because it can be changed into another prime (13531135837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765567768 + 6765567769.

It is an arithmetic number, because the mean of its divisors is an integer number (6765567769).

Almost surely, 2^13531135537 is an apocalyptic number.

It is an amenable number.

13531135537 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531135537 is an equidigital number, since it uses as much as digits as its factorization.

13531135537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70875, while the sum is 37.

The spelling of 13531135537 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty-five thousand, five hundred thirty-seven".