509999486943 has 32 divisors (see below), whose sum is σ = 703826952192. Its totient is φ = 328145954400.

The previous prime is 509999486933. The next prime is 509999486977. The reversal of 509999486943 is 349684999905.

It is not a de Polignac number, because 509999486943 - 2⁸ = 509999486687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509999486933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87520596 + ... + 87526422.

It is an arithmetic number, because the mean of its divisors is an integer number (21994592256).

Almost surely, 2^509999486943 is an apocalyptic number.

509999486943 is a deficient number, since it is larger than the sum of its proper divisors (193827465249).

509999486943 is a wasteful number, since it uses less digits than its factorization.

509999486943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8235.

The product of its (nonzero) digits is 680244480, while the sum is 75.

The spelling of 509999486943 in words is "five hundred nine billion, nine hundred ninety-nine million, four hundred eighty-six thousand, nine hundred forty-three".