243724070449 has 2 divisors, whose sum is σ = 243724070450. Its totient is φ = 243724070448.

The previous prime is 243724070437. The next prime is 243724070549. The reversal of 243724070449 is 944070427342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192605121424 + 51118949025 = 438868^2 + 226095^2 .

It is a cyclic number.

It is not a de Polignac number, because 243724070449 - 2⁵ = 243724070417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243724070399 and 243724070408.

It is not a weakly prime, because it can be changed into another prime (243724070419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121862035224 + 121862035225.

It is an arithmetic number, because the mean of its divisors is an integer number (121862035225).

Almost surely, 2^243724070449 is an apocalyptic number.

It is an amenable number.

243724070449 is a deficient number, since it is larger than the sum of its proper divisors (1).

243724070449 is an equidigital number, since it uses as much as digits as its factorization.

243724070449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 46.

The spelling of 243724070449 in words is "two hundred forty-three billion, seven hundred twenty-four million, seventy thousand, four hundred forty-nine".