505504999999 has 4 divisors (see below), whose sum is σ = 505512071064. Its totient is φ = 505497928936.

The previous prime is 505504999991. The next prime is 505505000009. The reversal of 505504999999 is 999999405505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505504999999 - 2³ = 505504999991 is a prime.

It is a Duffinian number.

505504999999 is a modest number, since divided by 999999 gives 505504 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505504999991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3427192 + ... + 3571645.

It is an arithmetic number, because the mean of its divisors is an integer number (126378017766).

Almost surely, 2^505504999999 is an apocalyptic number.

505504999999 is a deficient number, since it is larger than the sum of its proper divisors (7071065).

505504999999 is an equidigital number, since it uses as much as digits as its factorization.

505504999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071064.

The product of its (nonzero) digits is 265720500, while the sum is 73.

The spelling of 505504999999 in words is "five hundred five billion, five hundred four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".