505421624644 has 48 divisors (see below), whose sum is σ = 906423999040. Its totient is φ = 246515736960.

The previous prime is 505421624639. The next prime is 505421624663. The reversal of 505421624644 is 446426124505.

It is a self number, because there is not a number n which added to its sum of digits gives 505421624644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33806779 + ... + 33821725.

Almost surely, 2^505421624644 is an apocalyptic number.

It is an amenable number.

505421624644 is a deficient number, since it is larger than the sum of its proper divisors (401002374396).

505421624644 is a wasteful number, since it uses less digits than its factorization.

505421624644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16148 (or 16146 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 505421624644 in words is "five hundred five billion, four hundred twenty-one million, six hundred twenty-four thousand, six hundred forty-four".