243234414551 has 2 divisors, whose sum is σ = 243234414552. Its totient is φ = 243234414550.

The previous prime is 243234414539. The next prime is 243234414557. The reversal of 243234414551 is 155414432342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243234414551 - 2²⁶ = 243167305687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243234414557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121617207275 + 121617207276.

It is an arithmetic number, because the mean of its divisors is an integer number (121617207276).

Almost surely, 2^243234414551 is an apocalyptic number.

243234414551 is a deficient number, since it is larger than the sum of its proper divisors (1).

243234414551 is an equidigital number, since it uses as much as digits as its factorization.

243234414551 is an odious number, because the sum of its binary digits is odd.

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

Adding to 243234414551 its reverse (155414432342), we get a palindrome (398648846893).

The spelling of 243234414551 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred fourteen thousand, five hundred fifty-one".