243436465616101 has 4 divisors (see below), whose sum is σ = 243652086933100. Its totient is φ = 243220844299104.

The previous prime is 243436465616063. The next prime is 243436465616107. The reversal of 243436465616101 is 101616564634342.

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 72601135596900 + 170835330019201 = 8520630^2 + 13070399^2 .

It is a cyclic number.

It is not a de Polignac number, because 243436465616101 - 2²³ = 243436457227493 is a prime.

It is a super-2 number, since 2×243436465616101² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243436465616107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107810656806 + ... + 107810659063.

It is an arithmetic number, because the mean of its divisors is an integer number (60913021733275).

Almost surely, 2^{243436465616101} is an apocalyptic number.

It is an amenable number.

243436465616101 is a deficient number, since it is larger than the sum of its proper divisors (215621316999).

243436465616101 is a wasteful number, since it uses less digits than its factorization.

243436465616101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215621316998.

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 243436465616101 in words is "two hundred forty-three trillion, four hundred thirty-six billion, four hundred sixty-five million, six hundred sixteen thousand, one hundred one".