512342439961 has 9 divisors (see below), whose sum is σ = 563161915029. Its totient is φ = 465758696700.

The previous prime is 512342439901. The next prime is 512342439991. The reversal of 512342439961 is 169934243215.

The square root of 512342439961 is 715781.

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

It is a de Polignac number, because none of the positive numbers 2^k-512342439961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512342439901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7841056 + ... + 7906126.

Almost surely, 2^512342439961 is an apocalyptic number.

512342439961 is the 715781-st square number.

512342439961 is the 357891-st centered octagonal number.

It is an amenable number.

512342439961 is a deficient number, since it is larger than the sum of its proper divisors (50819475068).

512342439961 is an frugal number, since it uses more digits than its factorization.

512342439961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130164 (or 65082 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 49.

Multiplying 512342439961 by its sum of digits (49), we get a square (25104779558089 = 5010467²).

The spelling of 512342439961 in words is "five hundred twelve billion, three hundred forty-two million, four hundred thirty-nine thousand, nine hundred sixty-one".