539631671688 has 36 divisors (see below), whose sum is σ = 1461519326085. Its totient is φ = 179875146144.

The previous prime is 539631671659. The next prime is 539631671693. The reversal of 539631671688 is 886176136935.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

539631671688 is a `hidden beast` number, since 5 + 396 + 3 + 167 + 1 + 6 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 428210566884 + 111421104804 = 654378^2 + 333798^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=519438.

It is a super-3 number, since 3×539631671688³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6189970 + ... + 6276542.

Almost surely, 2^539631671688 is an apocalyptic number.

It is an amenable number.

539631671688 is an abundant number, since it is smaller than the sum of its proper divisors (921887654397).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

539631671688 is an frugal number, since it uses more digits than its factorization.

539631671688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173158 (or 86578 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 539631671688 in words is "five hundred thirty-nine billion, six hundred thirty-one million, six hundred seventy-one thousand, six hundred eighty-eight".