505500555555 has 12 divisors (see below), whose sum is σ = 876200963040. Its totient is φ = 269600296272.

The previous prime is 505500555551. The next prime is 505500555601. The reversal of 505500555555 is 555555005505.

It is not a de Polignac number, because 505500555555 - 2² = 505500555551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 11233345679 = 505500555555 / (5 + 0 + 5 + 5 + 0 + 0 + 5 + 5 + 5 + 5 + 5 + 5).

505500555555 is a modest number, since divided by 555555 gives 505500 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 505500555555.

It is not an unprimeable number, because it can be changed into a prime (505500555551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5616672795 + ... + 5616672884.

It is an arithmetic number, because the mean of its divisors is an integer number (73016746920).

Almost surely, 2^505500555555 is an apocalyptic number.

505500555555 is a deficient number, since it is larger than the sum of its proper divisors (370700407485).

505500555555 is a wasteful number, since it uses less digits than its factorization.

505500555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11233345690 (or 11233345687 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 505500555555 in words is "five hundred five billion, five hundred million, five hundred fifty-five thousand, five hundred fifty-five".