505555406416 has 20 divisors (see below), whose sum is σ = 979792693024. Its totient is φ = 252705679200.

The previous prime is 505555406407. The next prime is 505555406497. The reversal of 505555406416 is 614604555505.

It is a happy number.

It is a congruent number.

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, 4443570 + ... + 4555921.

Almost surely, 2^505555406416 is an apocalyptic number.

It is an amenable number.

505555406416 is a deficient number, since it is larger than the sum of its proper divisors (474237286608).

505555406416 is a wasteful number, since it uses less digits than its factorization.

505555406416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9003010 (or 9003004 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 505555406416 in words is "five hundred five billion, five hundred fifty-five million, four hundred six thousand, four hundred sixteen".