512644333664 has 48 divisors (see below), whose sum is σ = 1068351696720. Its totient is φ = 241728023040.

The previous prime is 512644333651. The next prime is 512644333667. The reversal of 512644333664 is 466333446215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512644333667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6383567 + ... + 6463374.

It is an arithmetic number, because the mean of its divisors is an integer number (22257327015).

Almost surely, 2^512644333664 is an apocalyptic number.

It is an amenable number.

512644333664 is an abundant number, since it is smaller than the sum of its proper divisors (555707363056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

512644333664 is a wasteful number, since it uses less digits than its factorization.

512644333664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12847023 (or 12847015 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 47.

Adding to 512644333664 its reverse (466333446215), we get a palindrome (978977779879).

The spelling of 512644333664 in words is "five hundred twelve billion, six hundred forty-four million, three hundred thirty-three thousand, six hundred sixty-four".