509662641311 has 4 divisors (see below), whose sum is σ = 509664746400. Its totient is φ = 509660536224.

The previous prime is 509662641247. The next prime is 509662641347. The reversal of 509662641311 is 113146266905.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 509662641311 - 2⁶ = 509662641247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509662641391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633866 + ... + 1192103.

It is an arithmetic number, because the mean of its divisors is an integer number (127416186600).

Almost surely, 2^509662641311 is an apocalyptic number.

509662641311 is a deficient number, since it is larger than the sum of its proper divisors (2105089).

509662641311 is a wasteful number, since it uses less digits than its factorization.

509662641311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105088.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 509662641311 in words is "five hundred nine billion, six hundred sixty-two million, six hundred forty-one thousand, three hundred eleven".