505545650145 has 24 divisors (see below), whose sum is σ = 876711162600. Its totient is φ = 269491412736.

The previous prime is 505545650047. The next prime is 505545650173. The reversal of 505545650145 is 541056545505.

It is a happy number.

505545650145 is a `hidden beast` number, since 5 + 0 + 5 + 5 + 456 + 50 + 145 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 61957681569 + 443587968576 = 248913^2 + 666024^2 .

It is not a de Polignac number, because 505545650145 - 2⁷ = 505545650017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 505545650145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2677140 + ... + 2859749.

It is an arithmetic number, because the mean of its divisors is an integer number (36529631775).

Almost surely, 2^505545650145 is an apocalyptic number.

It is an amenable number.

505545650145 is a deficient number, since it is larger than the sum of its proper divisors (371165512455).

505545650145 is a wasteful number, since it uses less digits than its factorization.

505545650145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538929 (or 5538926 counting only the distinct ones).

The product of its (nonzero) digits is 1500000, while the sum is 45.

The spelling of 505545650145 in words is "five hundred five billion, five hundred forty-five million, six hundred fifty thousand, one hundred forty-five".