505550550505 has 64 divisors (see below), whose sum is σ = 822011097600. Its totient is φ = 288237035520.

The previous prime is 505550550473. The next prime is 505550550517. The reversal of 505550550505 is 505055055505.

It is not a de Polignac number, because 505550550505 - 2⁵ = 505550550473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82201 + ... + 1008889.

It is an arithmetic number, because the mean of its divisors is an integer number (12843923400).

Almost surely, 2^505550550505 is an apocalyptic number.

505550550505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505550550505 is a deficient number, since it is larger than the sum of its proper divisors (316460547095).

505550550505 is a wasteful number, since it uses less digits than its factorization.

505550550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926834.

The product of its (nonzero) digits is 390625, while the sum is 40.

It can be divided in two parts, 50 and 5550550505, that added together give a palindrome (5550550555).

The spelling of 505550550505 in words is "five hundred five billion, five hundred fifty million, five hundred fifty thousand, five hundred five".