206455423351 has 2 divisors, whose sum is σ = 206455423352. Its totient is φ = 206455423350.

The previous prime is 206455423333. The next prime is 206455423379. The reversal of 206455423351 is 153324554602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206455423351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206455423301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103227711675 + 103227711676.

It is an arithmetic number, because the mean of its divisors is an integer number (103227711676).

Almost surely, 2^206455423351 is an apocalyptic number.

206455423351 is a deficient number, since it is larger than the sum of its proper divisors (1).

206455423351 is an equidigital number, since it uses as much as digits as its factorization.

206455423351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 206455423351 its reverse (153324554602), we get a palindrome (359779977953).

The spelling of 206455423351 in words is "two hundred six billion, four hundred fifty-five million, four hundred twenty-three thousand, three hundred fifty-one".