205197071735039 has 16 divisors (see below), whose sum is σ = 209570913208320. Its totient is φ = 200862992959200.

The previous prime is 205197071734937. The next prime is 205197071735099. The reversal of 205197071735039 is 930537170791502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 205197071735039 - 2²⁰ = 205197070686463 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 (205197071735099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18077102 + ... + 27150980.

It is an arithmetic number, because the mean of its divisors is an integer number (13098182075520).

Almost surely, 2^{205197071735039} is an apocalyptic number.

205197071735039 is a deficient number, since it is larger than the sum of its proper divisors (4373841473281).

205197071735039 is a wasteful number, since it uses less digits than its factorization.

205197071735039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9076070.

The product of its (nonzero) digits is 12502350, while the sum is 59.

The spelling of 205197071735039 in words is "two hundred five trillion, one hundred ninety-seven billion, seventy-one million, seven hundred thirty-five thousand, thirty-nine".