243330212277541 has 4 divisors (see below), whose sum is σ = 243480323452684. Its totient is φ = 243180101102400.

The previous prime is 243330212277479. The next prime is 243330212277601. The reversal of 243330212277541 is 145772212033342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137173169289025 + 106157042988516 = 11712095^2 + 10303254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243330212277541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243330212277491 and 243330212277500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243330212277241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75055585140 + ... + 75055588381.

It is an arithmetic number, because the mean of its divisors is an integer number (60870080863171).

Almost surely, 2^{243330212277541} is an apocalyptic number.

It is an amenable number.

243330212277541 is a deficient number, since it is larger than the sum of its proper divisors (150111175143).

243330212277541 is a wasteful number, since it uses less digits than its factorization.

243330212277541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150111175142.

The product of its (nonzero) digits is 1693440, while the sum is 46.

The spelling of 243330212277541 in words is "two hundred forty-three trillion, three hundred thirty billion, two hundred twelve million, two hundred seventy-seven thousand, five hundred forty-one".