505454321534399 has 2 divisors, whose sum is σ = 505454321534400. Its totient is φ = 505454321534398.

The previous prime is 505454321534329. The next prime is 505454321534507. The reversal of 505454321534399 is 993435123454505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505454321534399 - 2²⁴ = 505454304757183 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505454321534329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252727160767199 + 252727160767200.

It is an arithmetic number, because the mean of its divisors is an integer number (252727160767200).

Almost surely, 2^{505454321534399} is an apocalyptic number.

505454321534399 is a deficient number, since it is larger than the sum of its proper divisors (1).

505454321534399 is an equidigital number, since it uses as much as digits as its factorization.

505454321534399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960000, while the sum is 62.

The spelling of 505454321534399 in words is "five hundred five trillion, four hundred fifty-four billion, three hundred twenty-one million, five hundred thirty-four thousand, three hundred ninety-nine".