206341014521 has 4 divisors (see below), whose sum is σ = 206855581044. Its totient is φ = 205826448000.

The previous prime is 206341014491. The next prime is 206341014547. The reversal of 206341014521 is 125410143602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125410143602 = 2 ⋅62705071801.

It can be written as a sum of positive squares in 2 ways, for example, as 190043683600 + 16297330921 = 435940^2 + 127661^2 .

It is a cyclic number.

It is not a de Polignac number, because 206341014521 - 2⁶ = 206341014457 is a prime.

It is a super-2 number, since 2×206341014521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (206341014821) 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, 257282660 + ... + 257283461.

It is an arithmetic number, because the mean of its divisors is an integer number (51713895261).

Almost surely, 2^206341014521 is an apocalyptic number.

It is an amenable number.

206341014521 is a deficient number, since it is larger than the sum of its proper divisors (514566523).

206341014521 is an equidigital number, since it uses as much as digits as its factorization.

206341014521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514566522.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 206341014521 in words is "two hundred six billion, three hundred forty-one million, fourteen thousand, five hundred twenty-one".