12354365220647 has 2 divisors, whose sum is σ = 12354365220648. Its totient is φ = 12354365220646.

The previous prime is 12354365220641. The next prime is 12354365220667. The reversal of 12354365220647 is 74602256345321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12354365220647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12354365220595 and 12354365220604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12354365220641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177182610323 + 6177182610324.

It is an arithmetic number, because the mean of its divisors is an integer number (6177182610324).

Almost surely, 2^{12354365220647} is an apocalyptic number.

12354365220647 is a deficient number, since it is larger than the sum of its proper divisors (1).

12354365220647 is an equidigital number, since it uses as much as digits as its factorization.

12354365220647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 50.

The spelling of 12354365220647 in words is "twelve trillion, three hundred fifty-four billion, three hundred sixty-five million, two hundred twenty thousand, six hundred forty-seven".