505600055550 has 72 divisors (see below), whose sum is σ = 1359961204680. Its totient is φ = 134669620800.

The previous prime is 505600055549. The next prime is 505600055573. The reversal of 505600055550 is 55550006505.

505600055550 is a `hidden beast` number, since 5 + 0 + 56 + 0 + 0 + 0 + 55 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 267441 + ... + 1040540.

It is an arithmetic number, because the mean of its divisors is an integer number (18888350065).

Almost surely, 2^505600055550 is an apocalyptic number.

505600055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505600055550 is an abundant number, since it is smaller than the sum of its proper divisors (854361149130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505600055550 is a wasteful number, since it uses less digits than its factorization.

505600055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308858 (or 1308850 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The spelling of 505600055550 in words is "five hundred five billion, six hundred million, fifty-five thousand, five hundred fifty".