135437111549 has 2 divisors, whose sum is σ = 135437111550. Its totient is φ = 135437111548.

The previous prime is 135437111533. The next prime is 135437111603. The reversal of 135437111549 is 945111734531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130434378649 + 5002732900 = 361157^2 + 70730^2 .

It is a cyclic number.

It is not a de Polignac number, because 135437111549 - 2⁴ = 135437111533 is a prime.

It is a super-2 number, since 2×135437111549² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135437113549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67718555774 + 67718555775.

It is an arithmetic number, because the mean of its divisors is an integer number (67718555775).

Almost surely, 2^135437111549 is an apocalyptic number.

It is an amenable number.

135437111549 is a deficient number, since it is larger than the sum of its proper divisors (1).

135437111549 is an equidigital number, since it uses as much as digits as its factorization.

135437111549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The spelling of 135437111549 in words is "one hundred thirty-five billion, four hundred thirty-seven million, one hundred eleven thousand, five hundred forty-nine".