509218695051 has 8 divisors (see below), whose sum is σ = 740681738304. Its totient is φ = 308617390920.

The previous prime is 509218695043. The next prime is 509218695053. The reversal of 509218695051 is 150596812905.

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

It is not a de Polignac number, because 509218695051 - 2³ = 509218695043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 509218694985 and 509218695003.

It is not an unprimeable number, because it can be changed into a prime (509218695053) 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 7 ways as a sum of consecutive naturals, for example, 7715434741 + ... + 7715434806.

It is an arithmetic number, because the mean of its divisors is an integer number (92585217288).

Almost surely, 2^509218695051 is an apocalyptic number.

509218695051 is a deficient number, since it is larger than the sum of its proper divisors (231463043253).

509218695051 is a wasteful number, since it uses less digits than its factorization.

509218695051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15430869561.

The product of its (nonzero) digits is 972000, while the sum is 51.

The spelling of 509218695051 in words is "five hundred nine billion, two hundred eighteen million, six hundred ninety-five thousand, fifty-one".