505055055550 has 24 divisors (see below), whose sum is σ = 949086973296. Its totient is φ = 199939319040.

The previous prime is 505055055539. The next prime is 505055055611. The reversal of 505055055550 is 55550550505.

It is a super-2 number, since 2×505055055550² (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 11 ways as a sum of consecutive naturals, for example, 52062682 + ... + 52072381.

It is an arithmetic number, because the mean of its divisors is an integer number (39545290554).

Almost surely, 2^505055055550 is an apocalyptic number.

505055055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505055055550 is a deficient number, since it is larger than the sum of its proper divisors (444031917746).

505055055550 is a wasteful number, since it uses less digits than its factorization.

505055055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104135172 (or 104135167 counting only the distinct ones).

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

The spelling of 505055055550 in words is "five hundred five billion, fifty-five million, fifty-five thousand, five hundred fifty".