505240501999 has 2 divisors, whose sum is σ = 505240502000. Its totient is φ = 505240501998.

The previous prime is 505240501951. The next prime is 505240502183. The reversal of 505240501999 is 999105042505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505240501999 - 2¹⁵ = 505240469231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505240501499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252620250999 + 252620251000.

It is an arithmetic number, because the mean of its divisors is an integer number (252620251000).

Almost surely, 2^505240501999 is an apocalyptic number.

505240501999 is a deficient number, since it is larger than the sum of its proper divisors (1).

505240501999 is an equidigital number, since it uses as much as digits as its factorization.

505240501999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729000, while the sum is 49.

The spelling of 505240501999 in words is "five hundred five billion, two hundred forty million, five hundred one thousand, nine hundred ninety-nine".