559939420681 has 9 divisors (see below), whose sum is σ = 573961026919. Its totient is φ = 546252430000.

The previous prime is 559939420633. The next prime is 559939420693. The reversal of 559939420681 is 186024939955.

The square root of 559939420681 is 748291.

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

It can be written as a sum of positive squares in only one way, i.e., 26981019081 + 532958401600 = 164259^2 + 730040^2 .

It is not a de Polignac number, because 559939420681 - 2¹⁵ = 559939387913 is a prime.

It is a super-2 number, since 2×559939420681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (559934420681) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30670806 + ... + 30689056.

Almost surely, 2^559939420681 is an apocalyptic number.

559939420681 is the 748291-st square number.

559939420681 is the 374146-th centered octagonal number.

It is an amenable number.

559939420681 is a deficient number, since it is larger than the sum of its proper divisors (14021606238).

559939420681 is an frugal number, since it uses more digits than its factorization.

559939420681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36584 (or 18292 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 61.

The spelling of 559939420681 in words is "five hundred fifty-nine billion, nine hundred thirty-nine million, four hundred twenty thousand, six hundred eighty-one".