135055855931 has 2 divisors, whose sum is σ = 135055855932. Its totient is φ = 135055855930.

The previous prime is 135055855861. The next prime is 135055855939. The reversal of 135055855931 is 139558550531.

It is a strong prime.

It is an emirp because it is prime and its reverse (139558550531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135055855931 - 2¹⁰ = 135055854907 is a prime.

It is a super-2 number, since 2×135055855931² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135055855931.

It is not a weakly prime, because it can be changed into another prime (135055855939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67527927965 + 67527927966.

It is an arithmetic number, because the mean of its divisors is an integer number (67527927966).

Almost surely, 2^135055855931 is an apocalyptic number.

135055855931 is a deficient number, since it is larger than the sum of its proper divisors (1).

135055855931 is an equidigital number, since it uses as much as digits as its factorization.

135055855931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025000, while the sum is 50.

The spelling of 135055855931 in words is "one hundred thirty-five billion, fifty-five million, eight hundred fifty-five thousand, nine hundred thirty-one".