505544120406 has 24 divisors (see below), whose sum is σ = 1179602948160. Its totient is φ = 155552036976.

The previous prime is 505544120371. The next prime is 505544120447. The reversal of 505544120406 is 604021445505.

505544120406 is a `hidden beast` number, since 5 + 0 + 5 + 5 + 441 + 204 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1080222246 + ... + 1080222713.

It is an arithmetic number, because the mean of its divisors is an integer number (49150122840).

Almost surely, 2^505544120406 is an apocalyptic number.

505544120406 is an abundant number, since it is smaller than the sum of its proper divisors (674058827754).

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

505544120406 is a wasteful number, since it uses less digits than its factorization.

505544120406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160444980 (or 2160444977 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 505544120406 in words is "five hundred five billion, five hundred forty-four million, one hundred twenty thousand, four hundred six".