539797314681 has 27 divisors (see below), whose sum is σ = 801471032271. Its totient is φ = 350085899664.

The previous prime is 539797314673. The next prime is 539797314691. The reversal of 539797314681 is 186413797935.

The square root of 539797314681 is 734709.

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

539797314681 is a `hidden beast` number, since 5 + 39 + 79 + 73 + 1 + 468 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 483018050025 + 56779264656 = 694995^2 + 238284^2 .

It is not a de Polignac number, because 539797314681 - 2³ = 539797314673 is a prime.

It is a super-2 number, since 2×539797314681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (539797314611) 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, 81549390 + ... + 81556008.

Almost surely, 2^539797314681 is an apocalyptic number.

539797314681 is the 734709-th square number.

539797314681 is the 367355-th centered octagonal number.

It is an amenable number.

539797314681 is a deficient number, since it is larger than the sum of its proper divisors (261673717590).

539797314681 is an frugal number, since it uses more digits than its factorization.

539797314681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318 (or 6659 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 539797314681 in words is "five hundred thirty-nine billion, seven hundred ninety-seven million, three hundred fourteen thousand, six hundred eighty-one".