505500555005 has 32 divisors (see below), whose sum is σ = 645820322400. Its totient is φ = 378517708800.

The previous prime is 505500554987. The next prime is 505500555029. The reversal of 505500555005 is 500555005505.

It can be written as a sum of positive squares in 16 ways, for example, as 2619597124 + 502880957881 = 51182^2 + 709141^2 .

It is not a de Polignac number, because 505500555005 - 2⁸ = 505500554749 is a prime.

It is a super-2 number, since 2×505500555005² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51050555 + ... + 51060455.

It is an arithmetic number, because the mean of its divisors is an integer number (20181885075).

Almost surely, 2^505500555005 is an apocalyptic number.

It is an amenable number.

505500555005 is a deficient number, since it is larger than the sum of its proper divisors (140319767395).

505500555005 is a wasteful number, since it uses less digits than its factorization.

505500555005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13169.

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 505500555005 in words is "five hundred five billion, five hundred million, five hundred fifty-five thousand, five".