505434120436 has 12 divisors (see below), whose sum is σ = 1010868240928. Its totient is φ = 216614623032.

The previous prime is 505434120407. The next prime is 505434120439. The reversal of 505434120436 is 634021434505.

505434120436 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 505434120395 and 505434120404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505434120439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9025609266 + ... + 9025609321.

Almost surely, 2^505434120436 is an apocalyptic number.

It is an amenable number.

505434120436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

505434120436 is a wasteful number, since it uses less digits than its factorization.

505434120436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18051218598 (or 18051218596 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 505434120436 in words is "five hundred five billion, four hundred thirty-four million, one hundred twenty thousand, four hundred thirty-six".