135623836479779 has 2 divisors, whose sum is σ = 135623836479780. Its totient is φ = 135623836479778.

The previous prime is 135623836479749. The next prime is 135623836479797. The reversal of 135623836479779 is 977974638326531.

Together with next prime (135623836479797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135623836479779 - 2²⁴ = 135623819702563 is a prime.

It is not a weakly prime, because it can be changed into another prime (135623836479709) 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, 67811918239889 + 67811918239890.

It is an arithmetic number, because the mean of its divisors is an integer number (67811918239890).

Almost surely, 2^{135623836479779} is an apocalyptic number.

135623836479779 is a deficient number, since it is larger than the sum of its proper divisors (1).

135623836479779 is an equidigital number, since it uses as much as digits as its factorization.

135623836479779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8641624320, while the sum is 80.

The spelling of 135623836479779 in words is "one hundred thirty-five trillion, six hundred twenty-three billion, eight hundred thirty-six million, four hundred seventy-nine thousand, seven hundred seventy-nine".