243122103551 has 2 divisors, whose sum is σ = 243122103552. Its totient is φ = 243122103550.

The previous prime is 243122103527. The next prime is 243122103557. The reversal of 243122103551 is 155301221342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243122103551 - 2²⁶ = 243054994687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243122103557) 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, 121561051775 + 121561051776.

It is an arithmetic number, because the mean of its divisors is an integer number (121561051776).

Almost surely, 2^243122103551 is an apocalyptic number.

243122103551 is a deficient number, since it is larger than the sum of its proper divisors (1).

243122103551 is an equidigital number, since it uses as much as digits as its factorization.

243122103551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 243122103551 its reverse (155301221342), we get a palindrome (398423324893).

The spelling of 243122103551 in words is "two hundred forty-three billion, one hundred twenty-two million, one hundred three thousand, five hundred fifty-one".