505550055500 has 48 divisors (see below), whose sum is σ = 1261852947264. Its totient is φ = 173331446400.

The previous prime is 505550055487. The next prime is 505550055509. The reversal of 505550055500 is 5550055505.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (505550055509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72217937 + ... + 72224936.

It is an arithmetic number, because the mean of its divisors is an integer number (26288603068).

Almost surely, 2^505550055500 is an apocalyptic number.

505550055500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505550055500 is an abundant number, since it is smaller than the sum of its proper divisors (756302891764).

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

505550055500 is a wasteful number, since it uses less digits than its factorization.

505550055500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144442899 (or 144442887 counting only the distinct ones).

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

The spelling of 505550055500 in words is "five hundred five billion, five hundred fifty million, fifty-five thousand, five hundred".