243234415451 has 2 divisors, whose sum is σ = 243234415452. Its totient is φ = 243234415450.

The previous prime is 243234415399. The next prime is 243234415471. The reversal of 243234415451 is 154514432342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243234415451 is a prime.

It is not a weakly prime, because it can be changed into another prime (243234415471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121617207725 + 121617207726.

It is an arithmetic number, because the mean of its divisors is an integer number (121617207726).

Almost surely, 2^243234415451 is an apocalyptic number.

243234415451 is a deficient number, since it is larger than the sum of its proper divisors (1).

243234415451 is an equidigital number, since it uses as much as digits as its factorization.

243234415451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 38.

Adding to 243234415451 its reverse (154514432342), we get a palindrome (397748847793).

The spelling of 243234415451 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred fifteen thousand, four hundred fifty-one".