709443841920461 has 2 divisors, whose sum is σ = 709443841920462. Its totient is φ = 709443841920460.

The previous prime is 709443841920403. The next prime is 709443841920637. The reversal of 709443841920461 is 164029148344907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709355626980361 + 88214940100 = 26633731^2 + 297010^2 .

It is an emirp because it is prime and its reverse (164029148344907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 709443841920461 - 2⁶ = 709443841920397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 709443841920394 and 709443841920403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709443841940461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354721920960230 + 354721920960231.

It is an arithmetic number, because the mean of its divisors is an integer number (354721920960231).

Almost surely, 2^{709443841920461} is an apocalyptic number.

It is an amenable number.

709443841920461 is a deficient number, since it is larger than the sum of its proper divisors (1).

709443841920461 is an equidigital number, since it uses as much as digits as its factorization.

709443841920461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 709443841920461 in words is "seven hundred nine trillion, four hundred forty-three billion, eight hundred forty-one million, nine hundred twenty thousand, four hundred sixty-one".