505384442780 has 36 divisors (see below), whose sum is σ = 1234581998328. Its totient is φ = 173274665760.

The previous prime is 505384442749. The next prime is 505384442821. The reversal of 505384442780 is 87244483505.

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, 257848226 + ... + 257850185.

It is an arithmetic number, because the mean of its divisors is an integer number (34293944398).

Almost surely, 2^505384442780 is an apocalyptic number.

It is an amenable number.

505384442780 is an abundant number, since it is smaller than the sum of its proper divisors (729197555548).

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

505384442780 is a wasteful number, since it uses less digits than its factorization.

505384442780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515698434 (or 515698425 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 50.

The spelling of 505384442780 in words is "five hundred five billion, three hundred eighty-four million, four hundred forty-two thousand, seven hundred eighty".