1338994119961 has 2 divisors, whose sum is σ = 1338994119962. Its totient is φ = 1338994119960.

The previous prime is 1338994119943. The next prime is 1338994119971. The reversal of 1338994119961 is 1699114998331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1142053431561 + 196940688400 = 1068669^2 + 443780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1338994119961 - 2¹³ = 1338994111769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1338994119893 and 1338994119902.

It is not a weakly prime, because it can be changed into another prime (1338994119971) 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, 669497059980 + 669497059981.

It is an arithmetic number, because the mean of its divisors is an integer number (669497059981).

Almost surely, 2^{1338994119961} is an apocalyptic number.

It is an amenable number.

1338994119961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338994119961 is an equidigital number, since it uses as much as digits as its factorization.

1338994119961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11337408, while the sum is 64.

The spelling of 1338994119961 in words is "one trillion, three hundred thirty-eight billion, nine hundred ninety-four million, one hundred nineteen thousand, nine hundred sixty-one".