243136326461 has 8 divisors (see below), whose sum is σ = 280621277184. Its totient is φ = 206339173200.

The previous prime is 243136326449. The next prime is 243136326539. The reversal of 243136326461 is 164623631342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243136326461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243136326431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171948605 + ... + 171950018.

It is an arithmetic number, because the mean of its divisors is an integer number (35077659648).

Almost surely, 2^243136326461 is an apocalyptic number.

It is an amenable number.

243136326461 is a deficient number, since it is larger than the sum of its proper divisors (37484950723).

243136326461 is a wasteful number, since it uses less digits than its factorization.

243136326461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343898731.

The product of its digits is 373248, while the sum is 41.

The spelling of 243136326461 in words is "two hundred forty-three billion, one hundred thirty-six million, three hundred twenty-six thousand, four hundred sixty-one".