505545565145 has 8 divisors (see below), whose sum is σ = 606690509760. Its totient is φ = 404412564400.

The previous prime is 505545565141. The next prime is 505545565163. The reversal of 505545565145 is 541565545505.

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

It is not a de Polignac number, because 505545565145 - 2² = 505545565141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505545565093 and 505545565102.

It is not an unprimeable number, because it can be changed into a prime (505545565141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2892581 + ... + 3062370.

It is an arithmetic number, because the mean of its divisors is an integer number (75836313720).

Almost surely, 2^505545565145 is an apocalyptic number.

It is an amenable number.

505545565145 is a deficient number, since it is larger than the sum of its proper divisors (101144944615).

505545565145 is a wasteful number, since it uses less digits than its factorization.

505545565145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971935.

The product of its (nonzero) digits is 7500000, while the sum is 50.

The spelling of 505545565145 in words is "five hundred five billion, five hundred forty-five million, five hundred sixty-five thousand, one hundred forty-five".