512755007642 has 4 divisors (see below), whose sum is σ = 769132511466. Its totient is φ = 256377503820.

The previous prime is 512755007599. The next prime is 512755007651. The reversal of 512755007642 is 246700557215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 491514568561 + 21240439081 = 701081^2 + 145741^2 .

It is a junction number, because it is equal to n+sod(n) for n = 512755007593 and 512755007602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128188751909 + ... + 128188751912.

Almost surely, 2^512755007642 is an apocalyptic number.

512755007642 is a deficient number, since it is larger than the sum of its proper divisors (256377503824).

512755007642 is a wasteful number, since it uses less digits than its factorization.

512755007642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256377503823.

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 512755007642 in words is "five hundred twelve billion, seven hundred fifty-five million, seven thousand, six hundred forty-two".