135819284123 has 2 divisors, whose sum is σ = 135819284124. Its totient is φ = 135819284122.

The previous prime is 135819284093. The next prime is 135819284149. The reversal of 135819284123 is 321482918531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135819284123 - 2⁶ = 135819284059 is a prime.

It is not a weakly prime, because it can be changed into another prime (135819284323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67909642061 + 67909642062.

It is an arithmetic number, because the mean of its divisors is an integer number (67909642062).

Almost surely, 2^135819284123 is an apocalyptic number.

135819284123 is a deficient number, since it is larger than the sum of its proper divisors (1).

135819284123 is an equidigital number, since it uses as much as digits as its factorization.

135819284123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 47.

The spelling of 135819284123 in words is "one hundred thirty-five billion, eight hundred nineteen million, two hundred eighty-four thousand, one hundred twenty-three".