1355223343129 has 2 divisors, whose sum is σ = 1355223343130. Its totient is φ = 1355223343128.

The previous prime is 1355223343079. The next prime is 1355223343153. The reversal of 1355223343129 is 9213433225531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1342638990729 + 12584352400 = 1158723^2 + 112180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355223343129 - 2¹¹ = 1355223341081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355223743129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677611671564 + 677611671565.

It is an arithmetic number, because the mean of its divisors is an integer number (677611671565).

Almost surely, 2^{1355223343129} is an apocalyptic number.

It is an amenable number.

1355223343129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355223343129 is an equidigital number, since it uses as much as digits as its factorization.

1355223343129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 43.

The spelling of 1355223343129 in words is "one trillion, three hundred fifty-five billion, two hundred twenty-three million, three hundred forty-three thousand, one hundred twenty-nine".