243689644151 has 4 divisors (see below), whose sum is σ = 243690822312. Its totient is φ = 243688465992.

The previous prime is 243689644141. The next prime is 243689644171. The reversal of 243689644151 is 151446986342.

243689644151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 243689644151 - 2²⁶ = 243622535287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243689644093 and 243689644102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243689644111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187625 + ... + 722898.

It is an arithmetic number, because the mean of its divisors is an integer number (60922705578).

Almost surely, 2^243689644151 is an apocalyptic number.

243689644151 is a deficient number, since it is larger than the sum of its proper divisors (1178161).

243689644151 is an equidigital number, since it uses as much as digits as its factorization.

243689644151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178160.

The product of its digits is 4976640, while the sum is 53.

The spelling of 243689644151 in words is "two hundred forty-three billion, six hundred eighty-nine million, six hundred forty-four thousand, one hundred fifty-one".