538521469544 has 32 divisors (see below), whose sum is σ = 1037244743400. Its totient is φ = 261926058240.

The previous prime is 538521469531. The next prime is 538521469559. The reversal of 538521469544 is 445964125835.

It can be written as a sum of positive squares in 4 ways, for example, as 535633696900 + 2887772644 = 731870^2 + 53738^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 538521469544.

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 in 7 ways as a sum of consecutive naturals, for example, 1170962 + ... + 1564670.

Almost surely, 2^538521469544 is an apocalyptic number.

It is an amenable number.

538521469544 is a deficient number, since it is larger than the sum of its proper divisors (498723273856).

538521469544 is a wasteful number, since it uses less digits than its factorization.

538521469544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398373 (or 398369 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 56.

The spelling of 538521469544 in words is "five hundred thirty-eight billion, five hundred twenty-one million, four hundred sixty-nine thousand, five hundred forty-four".