206235412613 has 4 divisors (see below), whose sum is σ = 206247148800. Its totient is φ = 206223676428.

The previous prime is 206235412601. The next prime is 206235412651. The reversal of 206235412613 is 316214532602.

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, and also an emirpimes, since its reverse is a distinct semiprime: 316214532602 = 2 ⋅158107266301.

It is a cyclic number.

It is not a de Polignac number, because 206235412613 - 2⁶ = 206235412549 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 (206235412673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5841695 + ... + 5876892.

It is an arithmetic number, because the mean of its divisors is an integer number (51561787200).

Almost surely, 2^206235412613 is an apocalyptic number.

It is an amenable number.

206235412613 is a deficient number, since it is larger than the sum of its proper divisors (11736187).

206235412613 is a wasteful number, since it uses less digits than its factorization.

206235412613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11736186.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 206235412613 in words is "two hundred six billion, two hundred thirty-five million, four hundred twelve thousand, six hundred thirteen".