243345435451 has 2 divisors, whose sum is σ = 243345435452. Its totient is φ = 243345435450.

The previous prime is 243345435407. The next prime is 243345435461. The reversal of 243345435451 is 154534543342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243345435451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243345435398 and 243345435407.

It is not a weakly prime, because it can be changed into another prime (243345435401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121672717725 + 121672717726.

It is an arithmetic number, because the mean of its divisors is an integer number (121672717726).

Almost surely, 2^243345435451 is an apocalyptic number.

243345435451 is a deficient number, since it is larger than the sum of its proper divisors (1).

243345435451 is an equidigital number, since it uses as much as digits as its factorization.

243345435451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728000, while the sum is 43.

Adding to 243345435451 its reverse (154534543342), we get a palindrome (397879978793).

The spelling of 243345435451 in words is "two hundred forty-three billion, three hundred forty-five million, four hundred thirty-five thousand, four hundred fifty-one".