512766055540 has 12 divisors (see below), whose sum is σ = 1076808716676. Its totient is φ = 205106422208.

The previous prime is 512766055513. The next prime is 512766055541. The reversal of 512766055540 is 45550667215.

It can be written as a sum of positive squares in 2 ways, for example, as 81269466084 + 431496589456 = 285078^2 + 656884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512766055541) 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, 12819151369 + ... + 12819151408.

It is an arithmetic number, because the mean of its divisors is an integer number (89734059723).

Almost surely, 2^512766055540 is an apocalyptic number.

It is an amenable number.

512766055540 is an abundant number, since it is smaller than the sum of its proper divisors (564042661136).

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

512766055540 is a wasteful number, since it uses less digits than its factorization.

512766055540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25638302786 (or 25638302784 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 46.

The spelling of 512766055540 in words is "five hundred twelve billion, seven hundred sixty-six million, fifty-five thousand, five hundred forty".