243428822929 has 2 divisors, whose sum is σ = 243428822930. Its totient is φ = 243428822928.

The previous prime is 243428822921. The next prime is 243428822951. The reversal of 243428822929 is 929228824342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216262201600 + 27166621329 = 465040^2 + 164823^2 .

It is a cyclic number.

It is not a de Polignac number, because 243428822929 - 2³ = 243428822921 is a prime.

It is a super-2 number, since 2×243428822929² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243428822929.

It is not a weakly prime, because it can be changed into another prime (243428822921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121714411464 + 121714411465.

It is an arithmetic number, because the mean of its divisors is an integer number (121714411465).

Almost surely, 2^243428822929 is an apocalyptic number.

It is an amenable number.

243428822929 is a deficient number, since it is larger than the sum of its proper divisors (1).

243428822929 is an equidigital number, since it uses as much as digits as its factorization.

243428822929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7962624, while the sum is 55.

The spelling of 243428822929 in words is "two hundred forty-three billion, four hundred twenty-eight million, eight hundred twenty-two thousand, nine hundred twenty-nine".