1344555556889 has 2 divisors, whose sum is σ = 1344555556890. Its totient is φ = 1344555556888.

The previous prime is 1344555556873. The next prime is 1344555556901. The reversal of 1344555556889 is 9886555554431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251098175625 + 93457381264 = 1118525^2 + 305708^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344555556889 - 2⁴ = 1344555556873 is a prime.

It is a super-2 number, since 2×1344555556889² (a number of 25 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1344555556849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672277778444 + 672277778445.

It is an arithmetic number, because the mean of its divisors is an integer number (672277778445).

Almost surely, 2^{1344555556889} is an apocalyptic number.

It is an amenable number.

1344555556889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344555556889 is an equidigital number, since it uses as much as digits as its factorization.

1344555556889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400000, while the sum is 68.

The spelling of 1344555556889 in words is "one trillion, three hundred forty-four billion, five hundred fifty-five million, five hundred fifty-six thousand, eight hundred eighty-nine".