505440120230044 has 24 divisors (see below), whose sum is σ = 885909435889968. Its totient is φ = 252323146844160.

The previous prime is 505440120230041. The next prime is 505440120230047. The reversal of 505440120230044 is 440032021044505.

It is an interprime number because it is at equal distance from previous prime (505440120230041) and next prime (505440120230047).

It is a super-2 number, since 2×505440120230044² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505440120229991 and 505440120230009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505440120230041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255097767 + ... + 257071489.

It is an arithmetic number, because the mean of its divisors is an integer number (36912893162082).

Almost surely, 2^{505440120230044} is an apocalyptic number.

It is an amenable number.

505440120230044 is a deficient number, since it is larger than the sum of its proper divisors (380469315659924).

505440120230044 is a wasteful number, since it uses less digits than its factorization.

505440120230044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074245 (or 2074243 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 505440120230044 its reverse (440032021044505), we get a palindrome (945472141274549).

The spelling of 505440120230044 in words is "five hundred five trillion, four hundred forty billion, one hundred twenty million, two hundred thirty thousand, forty-four".