41643646196969 has 2 divisors, whose sum is σ = 41643646196970. Its totient is φ = 41643646196968.

The previous prime is 41643646196941. The next prime is 41643646196989. The reversal of 41643646196969 is 96969164634614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38798098931344 + 2845547265625 = 6228812^2 + 1686875^2 .

It is a cyclic number.

It is not a de Polignac number, because 41643646196969 - 2¹⁶ = 41643646131433 is a prime.

It is a super-2 number, since 2×41643646196969² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 41643646196896 and 41643646196905.

It is not a weakly prime, because it can be changed into another prime (41643646196989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20821823098484 + 20821823098485.

It is an arithmetic number, because the mean of its divisors is an integer number (20821823098485).

Almost surely, 2^{41643646196969} is an apocalyptic number.

It is an amenable number.

41643646196969 is a deficient number, since it is larger than the sum of its proper divisors (1).

41643646196969 is an equidigital number, since it uses as much as digits as its factorization.

41643646196969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088391168, while the sum is 74.

The spelling of 41643646196969 in words is "forty-one trillion, six hundred forty-three billion, six hundred forty-six million, one hundred ninety-six thousand, nine hundred sixty-nine".