512740491481 has 27 divisors (see below), whose sum is σ = 542149757877. Its totient is φ = 484886512440.

The previous prime is 512740491467. The next prime is 512740491491. The reversal of 512740491481 is 184194047215.

The square root of 512740491481 is 716059.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 512740491481 - 2¹⁹ = 512739967193 is a prime.

It is a super-2 number, since 2×512740491481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512740491491) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2684505096 + ... + 2684505286.

Almost surely, 2^512740491481 is an apocalyptic number.

512740491481 is the 716059-th square number.

512740491481 is the 358030-th centered octagonal number.

It is an amenable number.

512740491481 is a deficient number, since it is larger than the sum of its proper divisors (29409266396).

512740491481 is an frugal number, since it uses more digits than its factorization.

512740491481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 512740491481 in words is "five hundred twelve billion, seven hundred forty million, four hundred ninety-one thousand, four hundred eighty-one".