505055100128 has 24 divisors (see below), whose sum is σ = 994458694320. Its totient is φ = 252494161920.

The previous prime is 505055100119. The next prime is 505055100139. The reversal of 505055100128 is 821001550505.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 505055100094 and 505055100103.

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, 796673 + ... + 1282496.

It is an arithmetic number, because the mean of its divisors is an integer number (41435778930).

Almost surely, 2^505055100128 is an apocalyptic number.

It is an amenable number.

505055100128 is a deficient number, since it is larger than the sum of its proper divisors (489403594192).

505055100128 is a wasteful number, since it uses less digits than its factorization.

505055100128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086770 (or 2086762 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 32.

The spelling of 505055100128 in words is "five hundred five billion, fifty-five million, one hundred thousand, one hundred twenty-eight".