505308030503 has 4 divisors (see below), whose sum is σ = 505335644688. Its totient is φ = 505280416320.

The previous prime is 505308030449. The next prime is 505308030509. The reversal of 505308030503 is 305030803505.

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 505308030503 - 2⁶ = 505308030439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505308030503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505308030509) 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, 13779626 + ... + 13816247.

It is an arithmetic number, because the mean of its divisors is an integer number (126333911172).

Almost surely, 2^505308030503 is an apocalyptic number.

505308030503 is a deficient number, since it is larger than the sum of its proper divisors (27614185).

505308030503 is a wasteful number, since it uses less digits than its factorization.

505308030503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27614184.

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 505308030503 in words is "five hundred five billion, three hundred eight million, thirty thousand, five hundred three".