505478025244 has 24 divisors (see below), whose sum is σ = 899424981728. Its totient is φ = 248502565440.

The previous prime is 505478025233. The next prime is 505478025253. The reversal of 505478025244 is 442520874505.

It is a junction number, because it is equal to n+sod(n) for n = 505478025194 and 505478025203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266257 + ... + 1040119.

Almost surely, 2^505478025244 is an apocalyptic number.

It is an amenable number.

505478025244 is a deficient number, since it is larger than the sum of its proper divisors (393946956484).

505478025244 is a wasteful number, since it uses less digits than its factorization.

505478025244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776605 (or 776603 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 46.

Adding to 505478025244 its reverse (442520874505), we get a palindrome (947998899749).

The spelling of 505478025244 in words is "five hundred five billion, four hundred seventy-eight million, twenty-five thousand, two hundred forty-four".