1444196889617 has 2 divisors, whose sum is σ = 1444196889618. Its totient is φ = 1444196889616.

The previous prime is 1444196889613. The next prime is 1444196889623. The reversal of 1444196889617 is 7169886914441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1441846191361 + 2350698256 = 1200769^2 + 48484^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444196889617 - 2² = 1444196889613 is a prime.

It is not a weakly prime, because it can be changed into another prime (1444196889613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722098444808 + 722098444809.

It is an arithmetic number, because the mean of its divisors is an integer number (722098444809).

Almost surely, 2^{1444196889617} is an apocalyptic number.

It is an amenable number.

1444196889617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444196889617 is an equidigital number, since it uses as much as digits as its factorization.

1444196889617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83607552, while the sum is 68.

The spelling of 1444196889617 in words is "one trillion, four hundred forty-four billion, one hundred ninety-six million, eight hundred eighty-nine thousand, six hundred seventeen".