511020640204 has 12 divisors (see below), whose sum is σ = 894623987824. Its totient is φ = 255413786544.

The previous prime is 511020640153. The next prime is 511020640219. The reversal of 511020640204 is 402046020115.

It is a happy number.

It is a super-2 number, since 2×511020640204² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24121479 + ... + 24142654.

Almost surely, 2^511020640204 is an apocalyptic number.

It is an amenable number.

511020640204 is a deficient number, since it is larger than the sum of its proper divisors (383603347620).

511020640204 is a wasteful number, since it uses less digits than its factorization.

511020640204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48266784 (or 48266782 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 511020640204 its reverse (402046020115), we get a palindrome (913066660319).

The spelling of 511020640204 in words is "five hundred eleven billion, twenty million, six hundred forty thousand, two hundred four".