243123453479 has 2 divisors, whose sum is σ = 243123453480. Its totient is φ = 243123453478.

The previous prime is 243123453437. The next prime is 243123453481. The reversal of 243123453479 is 974354321342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243123453479 - 2¹² = 243123449383 is a prime.

Together with 243123453481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243123453409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121561726739 + 121561726740.

It is an arithmetic number, because the mean of its divisors is an integer number (121561726740).

Almost surely, 2^243123453479 is an apocalyptic number.

243123453479 is a deficient number, since it is larger than the sum of its proper divisors (1).

243123453479 is an equidigital number, since it uses as much as digits as its factorization.

243123453479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 47.

The spelling of 243123453479 in words is "two hundred forty-three billion, one hundred twenty-three million, four hundred fifty-three thousand, four hundred seventy-nine".