135623234240537 has 2 divisors, whose sum is σ = 135623234240538. Its totient is φ = 135623234240536.

The previous prime is 135623234240503. The next prime is 135623234240657. The reversal of 135623234240537 is 735042432326531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87374428910041 + 48248805330496 = 9347429^2 + 6946136^2 .

It is a cyclic number.

It is not a de Polignac number, because 135623234240537 - 2⁸ = 135623234240281 is a prime.

It is not a weakly prime, because it can be changed into another prime (135623234242537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67811617120268 + 67811617120269.

It is an arithmetic number, because the mean of its divisors is an integer number (67811617120269).

Almost surely, 2^{135623234240537} is an apocalyptic number.

It is an amenable number.

135623234240537 is a deficient number, since it is larger than the sum of its proper divisors (1).

135623234240537 is an equidigital number, since it uses as much as digits as its factorization.

135623234240537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 50.

The spelling of 135623234240537 in words is "one hundred thirty-five trillion, six hundred twenty-three billion, two hundred thirty-four million, two hundred forty thousand, five hundred thirty-seven".