509045789499 has 16 divisors (see below), whose sum is σ = 730971247104. Its totient is φ = 313244503200.

The previous prime is 509045789491. The next prime is 509045789587. The reversal of 509045789499 is 994987540905.

It is not a de Polignac number, because 509045789499 - 2³ = 509045789491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (509045789491) 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 15 ways as a sum of consecutive naturals, for example, 589054 + ... + 1168364.

It is an arithmetic number, because the mean of its divisors is an integer number (45685702944).

Almost surely, 2^509045789499 is an apocalyptic number.

509045789499 is a deficient number, since it is larger than the sum of its proper divisors (221925457605).

509045789499 is a wasteful number, since it uses less digits than its factorization.

509045789499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601858.

The product of its (nonzero) digits is 146966400, while the sum is 69.

The spelling of 509045789499 in words is "five hundred nine billion, forty-five million, seven hundred eighty-nine thousand, four hundred ninety-nine".