424500221205551 has 2 divisors, whose sum is σ = 424500221205552. Its totient is φ = 424500221205550.

The previous prime is 424500221205517. The next prime is 424500221205581. The reversal of 424500221205551 is 155502122005424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424500221205551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424500221205581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212250110602775 + 212250110602776.

It is an arithmetic number, because the mean of its divisors is an integer number (212250110602776).

Almost surely, 2^{424500221205551} is an apocalyptic number.

424500221205551 is a deficient number, since it is larger than the sum of its proper divisors (1).

424500221205551 is an equidigital number, since it uses as much as digits as its factorization.

424500221205551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 424500221205551 in words is "four hundred twenty-four trillion, five hundred billion, two hundred twenty-one million, two hundred five thousand, five hundred fifty-one".