505654323144 has 16 divisors (see below), whose sum is σ = 1264135807920. Its totient is φ = 168551441040.

The previous prime is 505654323131. The next prime is 505654323169. The reversal of 505654323144 is 441323456505.

It is a junction number, because it is equal to n+sod(n) for n = 505654323096 and 505654323105.

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, 10534465042 + ... + 10534465089.

It is an arithmetic number, because the mean of its divisors is an integer number (79008487995).

Almost surely, 2^505654323144 is an apocalyptic number.

It is an amenable number.

505654323144 is an abundant number, since it is smaller than the sum of its proper divisors (758481484776).

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

505654323144 is a wasteful number, since it uses less digits than its factorization.

505654323144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21068930140 (or 21068930136 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 505654323144 its reverse (441323456505), we get a palindrome (946977779649).

The spelling of 505654323144 in words is "five hundred five billion, six hundred fifty-four million, three hundred twenty-three thousand, one hundred forty-four".