511000509989 has 16 divisors (see below), whose sum is σ = 547048389120. Its totient is φ = 476261311680.

The previous prime is 511000509979. The next prime is 511000510003. The reversal of 511000509989 is 989905000115.

It is a cyclic number.

It is not a de Polignac number, because 511000509989 - 2¹⁶ = 511000444453 is a prime.

It is a super-2 number, since 2×511000509989² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511000509919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358979 + ... + 1072784.

It is an arithmetic number, because the mean of its divisors is an integer number (34190524320).

Almost surely, 2^511000509989 is an apocalyptic number.

It is an amenable number.

511000509989 is a deficient number, since it is larger than the sum of its proper divisors (36047879131).

511000509989 is a wasteful number, since it uses less digits than its factorization.

511000509989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432220.

The product of its (nonzero) digits is 145800, while the sum is 47.

The spelling of 511000509989 in words is "five hundred eleven billion, five hundred nine thousand, nine hundred eighty-nine".