538866673117 has 4 divisors (see below), whose sum is σ = 556249469056. Its totient is φ = 521483877180.

The previous prime is 538866673091. The next prime is 538866673141. The reversal of 538866673117 is 711376668835.

It is a happy number.

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-538866673117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538866673417) 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, 8691397923 + ... + 8691397984.

It is an arithmetic number, because the mean of its divisors is an integer number (139062367264).

Almost surely, 2^538866673117 is an apocalyptic number.

It is an amenable number.

538866673117 is a deficient number, since it is larger than the sum of its proper divisors (17382795939).

538866673117 is a wasteful number, since it uses less digits than its factorization.

538866673117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17382795938.

The product of its digits is 30481920, while the sum is 61.

The spelling of 538866673117 in words is "five hundred thirty-eight billion, eight hundred sixty-six million, six hundred seventy-three thousand, one hundred seventeen".