136646444423 has 2 divisors, whose sum is σ = 136646444424. Its totient is φ = 136646444422.

The previous prime is 136646444383. The next prime is 136646444437. The reversal of 136646444423 is 324444646631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136646444423 - 2⁸ = 136646444167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136646444443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68323222211 + 68323222212.

It is an arithmetic number, because the mean of its divisors is an integer number (68323222212).

Almost surely, 2^136646444423 is an apocalyptic number.

136646444423 is a deficient number, since it is larger than the sum of its proper divisors (1).

136646444423 is an equidigital number, since it uses as much as digits as its factorization.

136646444423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 47.

The spelling of 136646444423 in words is "one hundred thirty-six billion, six hundred forty-six million, four hundred forty-four thousand, four hundred twenty-three".