13523502137 has 2 divisors, whose sum is σ = 13523502138. Its totient is φ = 13523502136.

The previous prime is 13523502079. The next prime is 13523502203. The reversal of 13523502137 is 73120532531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11486694976 + 2036807161 = 107176^2 + 45131^2 .

It is a cyclic number.

It is not a de Polignac number, because 13523502137 - 2⁸ = 13523501881 is a prime.

It is a super-2 number, since 2×13523502137² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13523502637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6761751068 + 6761751069.

It is an arithmetic number, because the mean of its divisors is an integer number (6761751069).

Almost surely, 2^13523502137 is an apocalyptic number.

It is an amenable number.

13523502137 is a deficient number, since it is larger than the sum of its proper divisors (1).

13523502137 is an equidigital number, since it uses as much as digits as its factorization.

13523502137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 32.

The spelling of 13523502137 in words is "thirteen billion, five hundred twenty-three million, five hundred two thousand, one hundred thirty-seven".