505500005050 has 12 divisors (see below), whose sum is σ = 940230009486. Its totient is φ = 202200002000.

The previous prime is 505500005041. The next prime is 505500005057. The reversal of 505500005050 is 50500005505.

It can be written as a sum of positive squares in 3 ways, for example, as 334584735489 + 170915269561 = 578433^2 + 413419^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (505500005057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5055000001 + ... + 5055000100.

Almost surely, 2^505500005050 is an apocalyptic number.

505500005050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505500005050 is a deficient number, since it is larger than the sum of its proper divisors (434730004436).

505500005050 is a wasteful number, since it uses less digits than its factorization.

505500005050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110000113 (or 10110000108 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 25.

The spelling of 505500005050 in words is "five hundred five billion, five hundred million, five thousand, fifty".