556341449689 has 27 divisors (see below), whose sum is σ = 604031182461. Its totient is φ = 512332115040.

The previous prime is 556341449683. The next prime is 556341449731. The reversal of 556341449689 is 986944143655.

The square root of 556341449689 is 745883.

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

It can be written as a sum of positive squares in 4 ways, for example, as 185937752025 + 370403697664 = 431205^2 + 608608^2 .

It is not a de Polignac number, because 556341449689 - 2³ = 556341449681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556341449689.

It is not an unprimeable number, because it can be changed into a prime (556341449681) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 524355219 + ... + 524356279.

Almost surely, 2^556341449689 is an apocalyptic number.

556341449689 is the 745883-rd square number.

556341449689 is the 372942-nd centered octagonal number.

It is an amenable number.

556341449689 is a deficient number, since it is larger than the sum of its proper divisors (47689732772).

556341449689 is an frugal number, since it uses more digits than its factorization.

556341449689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234 (or 1117 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 64.

Multiplying 556341449689 by its sum of digits (64), we get a square (35605852780096 = 5967064²).

The spelling of 556341449689 in words is "five hundred fifty-six billion, three hundred forty-one million, four hundred forty-nine thousand, six hundred eighty-nine".