243115222951 has 2 divisors, whose sum is σ = 243115222952. Its totient is φ = 243115222950.

The previous prime is 243115222943. The next prime is 243115222981. The reversal of 243115222951 is 159222511342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243115222951 - 2³ = 243115222943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243115222951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243115222981) 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, 121557611475 + 121557611476.

It is an arithmetic number, because the mean of its divisors is an integer number (121557611476).

Almost surely, 2^243115222951 is an apocalyptic number.

243115222951 is a deficient number, since it is larger than the sum of its proper divisors (1).

243115222951 is an equidigital number, since it uses as much as digits as its factorization.

243115222951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The spelling of 243115222951 in words is "two hundred forty-three billion, one hundred fifteen million, two hundred twenty-two thousand, nine hundred fifty-one".