3205605642047 has 2 divisors, whose sum is σ = 3205605642048. Its totient is φ = 3205605642046.

The previous prime is 3205605641977. The next prime is 3205605642059. The reversal of 3205605642047 is 7402465065023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3205605642047 - 2¹⁰ = 3205605641023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3205605641989 and 3205605642007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3205605612047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602802821023 + 1602802821024.

It is an arithmetic number, because the mean of its divisors is an integer number (1602802821024).

Almost surely, 2^{3205605642047} is an apocalyptic number.

3205605642047 is a deficient number, since it is larger than the sum of its proper divisors (1).

3205605642047 is an equidigital number, since it uses as much as digits as its factorization.

3205605642047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 3205605642047 in words is "three trillion, two hundred five billion, six hundred five million, six hundred forty-two thousand, forty-seven".