13235340137 has 2 divisors, whose sum is σ = 13235340138. Its totient is φ = 13235340136.

The previous prime is 13235340121. The next prime is 13235340199. The reversal of 13235340137 is 73104353231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11999887936 + 1235452201 = 109544^2 + 35149^2 .

It is a cyclic number.

It is not a de Polignac number, because 13235340137 - 2⁴ = 13235340121 is a prime.

It is not a weakly prime, because it can be changed into another prime (13235340737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6617670068 + 6617670069.

It is an arithmetic number, because the mean of its divisors is an integer number (6617670069).

Almost surely, 2^13235340137 is an apocalyptic number.

It is an amenable number.

13235340137 is a deficient number, since it is larger than the sum of its proper divisors (1).

13235340137 is an equidigital number, since it uses as much as digits as its factorization.

13235340137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 32.

Adding to 13235340137 its reverse (73104353231), we get a palindrome (86339693368).

The spelling of 13235340137 in words is "thirteen billion, two hundred thirty-five million, three hundred forty thousand, one hundred thirty-seven".