121243463647673 has 2 divisors, whose sum is σ = 121243463647674. Its totient is φ = 121243463647672.

The previous prime is 121243463647643. The next prime is 121243463647711. The reversal of 121243463647673 is 376746364342121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77185836089209 + 44057627558464 = 8785547^2 + 6637592^2 .

It is a cyclic number.

It is not a de Polignac number, because 121243463647673 - 2¹⁴ = 121243463631289 is a prime.

It is not a weakly prime, because it can be changed into another prime (121243463647643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60621731823836 + 60621731823837.

It is an arithmetic number, because the mean of its divisors is an integer number (60621731823837).

Almost surely, 2^{121243463647673} is an apocalyptic number.

It is an amenable number.

121243463647673 is a deficient number, since it is larger than the sum of its proper divisors (1).

121243463647673 is an equidigital number, since it uses as much as digits as its factorization.

121243463647673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 59.

The spelling of 121243463647673 in words is "one hundred twenty-one trillion, two hundred forty-three billion, four hundred sixty-three million, six hundred forty-seven thousand, six hundred seventy-three".