1344555888889 has 4 divisors (see below), whose sum is σ = 1344611743056.
Its totient is φ = 1344500034724.
The previous prime is 1344555888869. The next prime is 1344555888967. The reversal of 1344555888889 is 9888885554431.
1344555888889 = T946767 + T946768 +
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 1344555888889 - 229 = 1344019017977 is a prime.
It is a Duffinian number.
It is a plaindrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (1344555888869) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27890959 + ... + 27939124.
It is an arithmetic number, because the mean of its divisors is an integer number (336152935764).
Almost surely, 21344555888889 is an apocalyptic number.
1344555888889 is the 946769-th centered triangular number.
It is an amenable number.
1344555888889 is a deficient number, since it is larger than the sum of its proper divisors (55854167).
1344555888889 is an equidigital number, since it uses as much as digits as its factorization.
1344555888889 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 55854166.
The product of its digits is 1769472000, while the sum is 76.
The spelling of 1344555888889 in words is "one trillion, three hundred forty-four billion, five hundred fifty-five million, eight hundred eighty-eight thousand, eight hundred eighty-nine".