538687050173 has 4 divisors (see below), whose sum is σ = 538965731388. Its totient is φ = 538408368960.

The previous prime is 538687050151. The next prime is 538687050179. The reversal of 538687050173 is 371050786835.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371050786835 = 5 ⋅74210157367.

It can be written as a sum of positive squares in 2 ways, for example, as 260775678244 + 277911371929 = 510662^2 + 527173^2 .

It is a cyclic number.

It is not a de Polignac number, because 538687050173 - 2²² = 538682855869 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 (538687050179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139337708 + ... + 139341573.

It is an arithmetic number, because the mean of its divisors is an integer number (134741432847).

Almost surely, 2^538687050173 is an apocalyptic number.

It is an amenable number.

538687050173 is a deficient number, since it is larger than the sum of its proper divisors (278681215).

538687050173 is a wasteful number, since it uses less digits than its factorization.

538687050173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278681214.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 538687050173 in words is "five hundred thirty-eight billion, six hundred eighty-seven million, fifty thousand, one hundred seventy-three".