243019427636123 has 2 divisors, whose sum is σ = 243019427636124. Its totient is φ = 243019427636122.

The previous prime is 243019427636093. The next prime is 243019427636261. The reversal of 243019427636123 is 321636724910342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243019427636123 - 2¹² = 243019427632027 is a prime.

It is a super-2 number, since 2×243019427636123² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243019427630123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121509713818061 + 121509713818062.

It is an arithmetic number, because the mean of its divisors is an integer number (121509713818062).

Almost surely, 2^{243019427636123} is an apocalyptic number.

243019427636123 is a deficient number, since it is larger than the sum of its proper divisors (1).

243019427636123 is an equidigital number, since it uses as much as digits as its factorization.

243019427636123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 243019427636123 in words is "two hundred forty-three trillion, nineteen billion, four hundred twenty-seven million, six hundred thirty-six thousand, one hundred twenty-three".