424881226603621 has 2 divisors, whose sum is σ = 424881226603622. Its totient is φ = 424881226603620.

The previous prime is 424881226603571. The next prime is 424881226603633. The reversal of 424881226603621 is 126306622188424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225687945051396 + 199193281552225 = 15022914^2 + 14113585^2 .

It is a cyclic number.

It is not a de Polignac number, because 424881226603621 - 2³¹ = 424879079119973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424881226603121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212440613301810 + 212440613301811.

It is an arithmetic number, because the mean of its divisors is an integer number (212440613301811).

Almost surely, 2^{424881226603621} is an apocalyptic number.

It is an amenable number.

424881226603621 is a deficient number, since it is larger than the sum of its proper divisors (1).

424881226603621 is an equidigital number, since it uses as much as digits as its factorization.

424881226603621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10616832, while the sum is 55.

The spelling of 424881226603621 in words is "four hundred twenty-four trillion, eight hundred eighty-one billion, two hundred twenty-six million, six hundred three thousand, six hundred twenty-one".