243110545361 has 2 divisors, whose sum is σ = 243110545362. Its totient is φ = 243110545360.

The previous prime is 243110545351. The next prime is 243110545409. The reversal of 243110545361 is 163545011342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240335257600 + 2775287761 = 490240^2 + 52681^2 .

It is a cyclic number.

It is not a de Polignac number, because 243110545361 - 2¹⁰ = 243110544337 is a prime.

It is a super-3 number, since 3×243110545361³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (243110545351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121555272680 + 121555272681.

It is an arithmetic number, because the mean of its divisors is an integer number (121555272681).

Almost surely, 2^243110545361 is an apocalyptic number.

It is an amenable number.

243110545361 is a deficient number, since it is larger than the sum of its proper divisors (1).

243110545361 is an equidigital number, since it uses as much as digits as its factorization.

243110545361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 243110545361 in words is "two hundred forty-three billion, one hundred ten million, five hundred forty-five thousand, three hundred sixty-one".