135622623609917 has 2 divisors, whose sum is σ = 135622623609918. Its totient is φ = 135622623609916.

The previous prime is 135622623609883. The next prime is 135622623609929. The reversal of 135622623609917 is 719906326226531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128424853635961 + 7197769973956 = 11332469^2 + 2682866^2 .

It is an emirp because it is prime and its reverse (719906326226531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135622623609917 - 2¹⁶ = 135622623544381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135622623609917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135622623609017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67811311804958 + 67811311804959.

It is an arithmetic number, because the mean of its divisors is an integer number (67811311804959).

Almost surely, 2^{135622623609917} is an apocalyptic number.

It is an amenable number.

135622623609917 is a deficient number, since it is larger than the sum of its proper divisors (1).

135622623609917 is an equidigital number, since it uses as much as digits as its factorization.

135622623609917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44089920, while the sum is 62.

The spelling of 135622623609917 in words is "one hundred thirty-five trillion, six hundred twenty-two billion, six hundred twenty-three million, six hundred nine thousand, nine hundred seventeen".