135623232143381 has 2 divisors, whose sum is σ = 135623232143382. Its totient is φ = 135623232143380.

The previous prime is 135623232143359. The next prime is 135623232143387. The reversal of 135623232143381 is 183341232326531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114180636865156 + 21442595278225 = 10685534^2 + 4630615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135623232143381 is a prime.

It is a super-2 number, since 2×135623232143381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135623232143387) 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, 67811616071690 + 67811616071691.

It is an arithmetic number, because the mean of its divisors is an integer number (67811616071691).

Almost surely, 2^{135623232143381} is an apocalyptic number.

It is an amenable number.

135623232143381 is a deficient number, since it is larger than the sum of its proper divisors (1).

135623232143381 is an equidigital number, since it uses as much as digits as its factorization.

135623232143381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 47.

The spelling of 135623232143381 in words is "one hundred thirty-five trillion, six hundred twenty-three billion, two hundred thirty-two million, one hundred forty-three thousand, three hundred eighty-one".