135440542234357 has 2 divisors, whose sum is σ = 135440542234358. Its totient is φ = 135440542234356.

The previous prime is 135440542234313. The next prime is 135440542234379. The reversal of 135440542234357 is 753432245044531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103278418434801 + 32162123799556 = 10162599^2 + 5671166^2 .

It is a cyclic number.

It is not a de Polignac number, because 135440542234357 - 2³¹ = 135438394750709 is a prime.

It is a super-2 number, since 2×135440542234357² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135440542294357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67720271117178 + 67720271117179.

It is an arithmetic number, because the mean of its divisors is an integer number (67720271117179).

Almost surely, 2^{135440542234357} is an apocalyptic number.

It is an amenable number.

135440542234357 is a deficient number, since it is larger than the sum of its proper divisors (1).

135440542234357 is an equidigital number, since it uses as much as digits as its factorization.

135440542234357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192000, while the sum is 52.

Adding to 135440542234357 its reverse (753432245044531), we get a palindrome (888872787278888).

The spelling of 135440542234357 in words is "one hundred thirty-five trillion, four hundred forty billion, five hundred forty-two million, two hundred thirty-four thousand, three hundred fifty-seven".