1346128955777 has 2 divisors, whose sum is σ = 1346128955778. Its totient is φ = 1346128955776.

The previous prime is 1346128955719. The next prime is 1346128955813. The reversal of 1346128955777 is 7775598216431.

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., 925759562896 + 420369392881 = 962164^2 + 648359^2 .

It is an emirp because it is prime and its reverse (7775598216431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1346128955777 - 2¹⁸ = 1346128693633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1346128955477) 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, 673064477888 + 673064477889.

It is an arithmetic number, because the mean of its divisors is an integer number (673064477889).

Almost surely, 2^{1346128955777} is an apocalyptic number.

It is an amenable number.

1346128955777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346128955777 is an equidigital number, since it uses as much as digits as its factorization.

1346128955777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88905600, while the sum is 65.

The spelling of 1346128955777 in words is "one trillion, three hundred forty-six billion, one hundred twenty-eight million, nine hundred fifty-five thousand, seven hundred seventy-seven".