505144030220 has 12 divisors (see below), whose sum is σ = 1060802463504. Its totient is φ = 202057612080.

The previous prime is 505144030207. The next prime is 505144030273. The reversal of 505144030220 is 22030441505.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 505144030220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12628600736 + ... + 12628600775.

It is an arithmetic number, because the mean of its divisors is an integer number (88400205292).

Almost surely, 2^505144030220 is an apocalyptic number.

It is an amenable number.

505144030220 is an abundant number, since it is smaller than the sum of its proper divisors (555658433284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505144030220 is a wasteful number, since it uses less digits than its factorization.

505144030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25257201520 (or 25257201518 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 505144030220 its reverse (22030441505), we get a palindrome (527174471725).

The spelling of 505144030220 in words is "five hundred five billion, one hundred forty-four million, thirty thousand, two hundred twenty".