505500500001 has 8 divisors (see below), whose sum is σ = 770286476224. Its totient is φ = 288857428560.

The previous prime is 505500499997. The next prime is 505500500051. The reversal of 505500500001 is 100005005505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505500500001 - 2² = 505500499997 is a prime.

It is a super-2 number, since 2×505500500001² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 24071452381 = 505500500001 / (5 + 0 + 5 + 5 + 0 + 0 + 5 + 0 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505500500051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12035726170 + ... + 12035726211.

It is an arithmetic number, because the mean of its divisors is an integer number (96285809528).

Almost surely, 2^505500500001 is an apocalyptic number.

It is an amenable number.

505500500001 is a deficient number, since it is larger than the sum of its proper divisors (264785976223).

505500500001 is a wasteful number, since it uses less digits than its factorization.

505500500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24071452391.

The product of its (nonzero) digits is 625, while the sum is 21.

Adding to 505500500001 its reverse (100005005505), we get a palindrome (605505505506).

The spelling of 505500500001 in words is "five hundred five billion, five hundred million, five hundred thousand, one".