509005455863 has 4 divisors (see below), whose sum is σ = 509504971560. Its totient is φ = 508505940168.

The previous prime is 509005455841. The next prime is 509005455877. The reversal of 509005455863 is 368554500905.

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

It is a cyclic number.

It is not a de Polignac number, because 509005455863 - 2¹⁴ = 509005439479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509005455263) 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, 249756320 + ... + 249758357.

It is an arithmetic number, because the mean of its divisors is an integer number (127376242890).

Almost surely, 2^509005455863 is an apocalyptic number.

509005455863 is a deficient number, since it is larger than the sum of its proper divisors (499515697).

509005455863 is a wasteful number, since it uses less digits than its factorization.

509005455863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499515696.

The product of its (nonzero) digits is 3240000, while the sum is 50.

The spelling of 509005455863 in words is "five hundred nine billion, five million, four hundred fifty-five thousand, eight hundred sixty-three".