511236320404 has 12 divisors (see below), whose sum is σ = 894668578804. Its totient is φ = 255616726464.

The previous prime is 511236320327. The next prime is 511236320407. The reversal of 511236320404 is 404023632115.

It can be written as a sum of positive squares in 2 ways, for example, as 331485759504 + 179750560900 = 575748^2 + 423970^2 .

It is a super-2 number, since 2×511236320404² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511236320407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138342 + ... + 1522594.

Almost surely, 2^511236320404 is an apocalyptic number.

It is an amenable number.

511236320404 is a deficient number, since it is larger than the sum of its proper divisors (383432258400).

511236320404 is a wasteful number, since it uses less digits than its factorization.

511236320404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716874 (or 716872 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 511236320404 its reverse (404023632115), we get a palindrome (915259952519).

The spelling of 511236320404 in words is "five hundred eleven billion, two hundred thirty-six million, three hundred twenty thousand, four hundred four".