505204542379 has 2 divisors, whose sum is σ = 505204542380. Its totient is φ = 505204542378.

The previous prime is 505204542331. The next prime is 505204542407. The reversal of 505204542379 is 973245402505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505204542379 is a prime.

It is not a weakly prime, because it can be changed into another prime (505204542319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252602271189 + 252602271190.

It is an arithmetic number, because the mean of its divisors is an integer number (252602271190).

Almost surely, 2^505204542379 is an apocalyptic number.

505204542379 is a deficient number, since it is larger than the sum of its proper divisors (1).

505204542379 is an equidigital number, since it uses as much as digits as its factorization.

505204542379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 505204542379 in words is "five hundred five billion, two hundred four million, five hundred forty-two thousand, three hundred seventy-nine".