1341321999961 has 2 divisors, whose sum is σ = 1341321999962. Its totient is φ = 1341321999960.

The previous prime is 1341321999949. The next prime is 1341322000043. The reversal of 1341321999961 is 1699991231431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970532344336 + 370789655625 = 985156^2 + 608925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1341321999961 - 2¹⁷ = 1341321868889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1341321999896 and 1341321999905.

It is not a weakly prime, because it can be changed into another prime (1341321699961) 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, 670660999980 + 670660999981.

It is an arithmetic number, because the mean of its divisors is an integer number (670660999981).

Almost surely, 2^{1341321999961} is an apocalyptic number.

It is an amenable number.

1341321999961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1341321999961 is an equidigital number, since it uses as much as digits as its factorization.

1341321999961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2834352, while the sum is 58.

The spelling of 1341321999961 in words is "one trillion, three hundred forty-one billion, three hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred sixty-one".