505354223565 has 64 divisors (see below), whose sum is σ = 905845248000. Its totient is φ = 267298304832.

The previous prime is 505354223531. The next prime is 505354223597. The reversal of 505354223565 is 565322453505.

It is a happy number.

505354223565 is a `hidden beast` number, since 5 + 0 + 5 + 354 + 2 + 235 + 65 = 666.

It is not a de Polignac number, because 505354223565 - 2¹¹ = 505354221517 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 505354223565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9962136 + ... + 10012734.

It is an arithmetic number, because the mean of its divisors is an integer number (14153832000).

Almost surely, 2^505354223565 is an apocalyptic number.

It is an amenable number.

505354223565 is a deficient number, since it is larger than the sum of its proper divisors (400491024435).

505354223565 is a wasteful number, since it uses less digits than its factorization.

505354223565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51223 (or 51217 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 45.

The spelling of 505354223565 in words is "five hundred five billion, three hundred fifty-four million, two hundred twenty-three thousand, five hundred sixty-five".