505000550023 has 4 divisors (see below), whose sum is σ = 531579526360. Its totient is φ = 478421573688.

The previous prime is 505000550011. The next prime is 505000550029. The reversal of 505000550023 is 320055000505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505000550023 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 505000550023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505000550029) 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, 13289488140 + ... + 13289488177.

It is an arithmetic number, because the mean of its divisors is an integer number (132894881590).

Almost surely, 2^505000550023 is an apocalyptic number.

505000550023 is a deficient number, since it is larger than the sum of its proper divisors (26578976337).

505000550023 is a wasteful number, since it uses less digits than its factorization.

505000550023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26578976336.

The product of its (nonzero) digits is 3750, while the sum is 25.

Adding to 505000550023 its reverse (320055000505), we get a palindrome (825055550528).

The spelling of 505000550023 in words is "five hundred five billion, five hundred fifty thousand, twenty-three".