206402043434245 has 8 divisors (see below), whose sum is σ = 247732418350584. Its totient is φ = 165088323927744.

The previous prime is 206402043434227. The next prime is 206402043434267. The reversal of 206402043434245 is 542434340204602.

It can be written as a sum of positive squares in 4 ways, for example, as 67679958529089 + 138722084905156 = 8226783^2 + 11778034^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206402043434245 - 2⁴³ = 197605950412037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4163825194 + ... + 4163874763.

It is an arithmetic number, because the mean of its divisors is an integer number (30966552293823).

Almost surely, 2^{206402043434245} is an apocalyptic number.

It is an amenable number.

206402043434245 is a deficient number, since it is larger than the sum of its proper divisors (41330374916339).

206402043434245 is an equidigital number, since it uses as much as digits as its factorization.

206402043434245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8327704919.

The product of its (nonzero) digits is 2211840, while the sum is 43.

Adding to 206402043434245 its reverse (542434340204602), we get a palindrome (748836383638847).

The spelling of 206402043434245 in words is "two hundred six trillion, four hundred two billion, forty-three million, four hundred thirty-four thousand, two hundred forty-five".