539539536881 has 4 divisors (see below), whose sum is σ = 539589920064. Its totient is φ = 539489153700.

The previous prime is 539539536857. The next prime is 539539536937. The reversal of 539539536881 is 188635935935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-539539536881 is a prime.

It is a super-2 number, since 2×539539536881² (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 (539539536841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25175525 + ... + 25196946.

It is an arithmetic number, because the mean of its divisors is an integer number (134897480016).

Almost surely, 2^539539536881 is an apocalyptic number.

It is an amenable number.

539539536881 is a deficient number, since it is larger than the sum of its proper divisors (50383183).

539539536881 is a wasteful number, since it uses less digits than its factorization.

539539536881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50383182.

The product of its digits is 104976000, while the sum is 65.

The spelling of 539539536881 in words is "five hundred thirty-nine billion, five hundred thirty-nine million, five hundred thirty-six thousand, eight hundred eighty-one".