503412042653665 has 4 divisors (see below), whose sum is σ = 604094451184404. Its totient is φ = 402729634122928.

The previous prime is 503412042653633. The next prime is 503412042653669. The reversal of 503412042653665 is 566356240214305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129629792418064 + 373782250235601 = 11385508^2 + 19333449^2 .

It is a cyclic number.

It is not a de Polignac number, because 503412042653665 - 2⁵ = 503412042653633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503412042653669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50341204265362 + ... + 50341204265371.

It is an arithmetic number, because the mean of its divisors is an integer number (151023612796101).

Almost surely, 2^{503412042653665} is an apocalyptic number.

It is an amenable number.

503412042653665 is a deficient number, since it is larger than the sum of its proper divisors (100682408530739).

503412042653665 is a wasteful number, since it uses less digits than its factorization.

503412042653665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100682408530738.

The product of its (nonzero) digits is 15552000, while the sum is 52.

The spelling of 503412042653665 in words is "five hundred three trillion, four hundred twelve billion, forty-two million, six hundred fifty-three thousand, six hundred sixty-five".