243122049979 has 2 divisors, whose sum is σ = 243122049980. Its totient is φ = 243122049978.

The previous prime is 243122049967. The next prime is 243122049991. The reversal of 243122049979 is 979940221342.

It is a balanced prime because it is at equal distance from previous prime (243122049967) and next prime (243122049991).

It is a cyclic number.

It is not a de Polignac number, because 243122049979 - 2²⁵ = 243088495547 is a prime.

It is not a weakly prime, because it can be changed into another prime (243122043979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121561024989 + 121561024990.

It is an arithmetic number, because the mean of its divisors is an integer number (121561024990).

Almost surely, 2^243122049979 is an apocalyptic number.

243122049979 is a deficient number, since it is larger than the sum of its proper divisors (1).

243122049979 is an equidigital number, since it uses as much as digits as its factorization.

243122049979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 243122049979 in words is "two hundred forty-three billion, one hundred twenty-two million, forty-nine thousand, nine hundred seventy-nine".