243742600451 has 8 divisors (see below), whose sum is σ = 280271948544. Its totient is φ = 207640496520.

The previous prime is 243742600433. The next prime is 243742600463. The reversal of 243742600451 is 154006247342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243742600451 - 2¹⁴ = 243742584067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243742608451) 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, 106809815 + ... + 106812096.

It is an arithmetic number, because the mean of its divisors is an integer number (35033993568).

Almost surely, 2^243742600451 is an apocalyptic number.

243742600451 is a deficient number, since it is larger than the sum of its proper divisors (36529348093).

243742600451 is a wasteful number, since it uses less digits than its factorization.

243742600451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213622081.

The product of its (nonzero) digits is 161280, while the sum is 38.

Adding to 243742600451 its reverse (154006247342), we get a palindrome (397748847793).

The spelling of 243742600451 in words is "two hundred forty-three billion, seven hundred forty-two million, six hundred thousand, four hundred fifty-one".