509323235869 has 8 divisors (see below), whose sum is σ = 583227285120. Its totient is φ = 435705083376.

The previous prime is 509323235747. The next prime is 509323235929. The reversal of 509323235869 is 968532323905.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 509323235869 - 2³¹ = 507175752221 is a prime.

It is a super-2 number, since 2×509323235869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509323275869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71470369 + ... + 71477494.

It is an arithmetic number, because the mean of its divisors is an integer number (72903410640).

Almost surely, 2^509323235869 is an apocalyptic number.

It is an amenable number.

509323235869 is a deficient number, since it is larger than the sum of its proper divisors (73904049251).

509323235869 is a wasteful number, since it uses less digits than its factorization.

509323235869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142948379.

The product of its (nonzero) digits is 10497600, while the sum is 55.

The spelling of 509323235869 in words is "five hundred nine billion, three hundred twenty-three million, two hundred thirty-five thousand, eight hundred sixty-nine".