243504351029 has 2 divisors, whose sum is σ = 243504351030. Its totient is φ = 243504351028.

The previous prime is 243504350989. The next prime is 243504351043. The reversal of 243504351029 is 920153405342.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221560372804 + 21943978225 = 470702^2 + 148135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243504351029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243504350983 and 243504351001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243504321029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121752175514 + 121752175515.

It is an arithmetic number, because the mean of its divisors is an integer number (121752175515).

Almost surely, 2^243504351029 is an apocalyptic number.

It is an amenable number.

243504351029 is a deficient number, since it is larger than the sum of its proper divisors (1).

243504351029 is an equidigital number, since it uses as much as digits as its factorization.

243504351029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 243504351029 in words is "two hundred forty-three billion, five hundred four million, three hundred fifty-one thousand, twenty-nine".