538897289578 has 4 divisors (see below), whose sum is σ = 808345934370. Its totient is φ = 269448644788.

The previous prime is 538897289561. The next prime is 538897289627. The reversal of 538897289578 is 875982798835.

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., 488722633569 + 50174656009 = 699087^2 + 223997^2 .

It is a junction number, because it is equal to n+sod(n) for n = 538897289498 and 538897289507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134724322393 + ... + 134724322396.

Almost surely, 2^538897289578 is an apocalyptic number.

538897289578 is a deficient number, since it is larger than the sum of its proper divisors (269448644792).

538897289578 is a wasteful number, since it uses less digits than its factorization.

538897289578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269448644791.

The product of its digits is 2438553600, while the sum is 79.

The spelling of 538897289578 in words is "five hundred thirty-eight billion, eight hundred ninety-seven million, two hundred eighty-nine thousand, five hundred seventy-eight".