1264340141173 has 2 divisors, whose sum is σ = 1264340141174. Its totient is φ = 1264340141172.

The previous prime is 1264340141161. The next prime is 1264340141203. The reversal of 1264340141173 is 3711410434621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1221604088644 + 42736052529 = 1105262^2 + 206727^2 .

It is an emirp because it is prime and its reverse (3711410434621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264340141173 - 2¹³ = 1264340132981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264340141473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632170070586 + 632170070587.

It is an arithmetic number, because the mean of its divisors is an integer number (632170070587).

Almost surely, 2^{1264340141173} is an apocalyptic number.

It is an amenable number.

1264340141173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264340141173 is an equidigital number, since it uses as much as digits as its factorization.

1264340141173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 1264340141173 its reverse (3711410434621), we get a palindrome (4975750575794).

The spelling of 1264340141173 in words is "one trillion, two hundred sixty-four billion, three hundred forty million, one hundred forty-one thousand, one hundred seventy-three".