205305422401451 has 2 divisors, whose sum is σ = 205305422401452. Its totient is φ = 205305422401450.

The previous prime is 205305422401439. The next prime is 205305422401537. The reversal of 205305422401451 is 154104224503502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205305422401451 is a prime.

It is not a weakly prime, because it can be changed into another prime (205305422401351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102652711200725 + 102652711200726.

It is an arithmetic number, because the mean of its divisors is an integer number (102652711200726).

Almost surely, 2^{205305422401451} is an apocalyptic number.

205305422401451 is a deficient number, since it is larger than the sum of its proper divisors (1).

205305422401451 is an equidigital number, since it uses as much as digits as its factorization.

205305422401451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 205305422401451 its reverse (154104224503502), we get a palindrome (359409646904953).

The spelling of 205305422401451 in words is "two hundred five trillion, three hundred five billion, four hundred twenty-two million, four hundred one thousand, four hundred fifty-one".