512395441018 has 4 divisors (see below), whose sum is σ = 768593161530. Its totient is φ = 256197720508.

The previous prime is 512395441013. The next prime is 512395441069. The reversal of 512395441018 is 810144593215.

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., 484230881689 + 28164559329 = 695867^2 + 167823^2 .

It is not an unprimeable number, because it can be changed into a prime (512395441013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128098860253 + ... + 128098860256.

Almost surely, 2^512395441018 is an apocalyptic number.

512395441018 is a deficient number, since it is larger than the sum of its proper divisors (256197720512).

512395441018 is a wasteful number, since it uses less digits than its factorization.

512395441018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256197720511.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 512395441018 in words is "five hundred twelve billion, three hundred ninety-five million, four hundred forty-one thousand, eighteen".