505387420523 has 2 divisors, whose sum is σ = 505387420524. Its totient is φ = 505387420522.

The previous prime is 505387420511. The next prime is 505387420529. The reversal of 505387420523 is 325024783505.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505387420523 - 2¹² = 505387416427 is a prime.

It is not a weakly prime, because it can be changed into another prime (505387420529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252693710261 + 252693710262.

It is an arithmetic number, because the mean of its divisors is an integer number (252693710262).

Almost surely, 2^505387420523 is an apocalyptic number.

505387420523 is a deficient number, since it is larger than the sum of its proper divisors (1).

505387420523 is an equidigital number, since it uses as much as digits as its factorization.

505387420523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 505387420523 in words is "five hundred five billion, three hundred eighty-seven million, four hundred twenty thousand, five hundred twenty-three".