243776112201 has 12 divisors (see below), whose sum is σ = 361637836612. Its totient is φ = 158125045536.

The previous prime is 243776112197. The next prime is 243776112227. The reversal of 243776112201 is 102211677342.

243776112201 is a `hidden beast` number, since 2 + 4 + 37 + 7 + 611 + 2 + 2 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 204619617801 + 39156494400 = 452349^2 + 197880^2 .

It is not a de Polignac number, because 243776112201 - 2² = 243776112197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243776112301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366029866 + ... + 366030531.

Almost surely, 2^243776112201 is an apocalyptic number.

It is an amenable number.

243776112201 is a deficient number, since it is larger than the sum of its proper divisors (117861724411).

243776112201 is a wasteful number, since it uses less digits than its factorization.

243776112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732060440 (or 732060437 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

Adding to 243776112201 its reverse (102211677342), we get a palindrome (345987789543).

The spelling of 243776112201 in words is "two hundred forty-three billion, seven hundred seventy-six million, one hundred twelve thousand, two hundred one".