505213622444 has 12 divisors (see below), whose sum is σ = 884132226264. Its totient is φ = 252604414944.

The previous prime is 505213622377. The next prime is 505213622461. The reversal of 505213622444 is 444226312505.

It is a junction number, because it is equal to n+sod(n) for n = 505213622398 and 505213622407.

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, 73457 + ... + 1007880.

It is an arithmetic number, because the mean of its divisors is an integer number (73677685522).

Almost surely, 2^505213622444 is an apocalyptic number.

It is an amenable number.

505213622444 is a deficient number, since it is larger than the sum of its proper divisors (378918603820).

505213622444 is a wasteful number, since it uses less digits than its factorization.

505213622444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198144 (or 1198142 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 505213622444 its reverse (444226312505), we get a palindrome (949439934949).

The spelling of 505213622444 in words is "five hundred five billion, two hundred thirteen million, six hundred twenty-two thousand, four hundred forty-four".