505555611028 has 12 divisors (see below), whose sum is σ = 952777882420. Its totient is φ = 233333358912.

The previous prime is 505555610977. The next prime is 505555611059. The reversal of 505555611028 is 820116555505.

It can be written as a sum of positive squares in 2 ways, for example, as 110754508804 + 394801102224 = 332798^2 + 628332^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4861111593 + ... + 4861111696.

Almost surely, 2^505555611028 is an apocalyptic number.

It is an amenable number.

505555611028 is a deficient number, since it is larger than the sum of its proper divisors (447222271392).

505555611028 is a wasteful number, since it uses less digits than its factorization.

505555611028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722223306 (or 9722223304 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 43.

The spelling of 505555611028 in words is "five hundred five billion, five hundred fifty-five million, six hundred eleven thousand, twenty-eight".