243013344451 has 4 divisors (see below), whose sum is σ = 243134188504. Its totient is φ = 242892500400.

The previous prime is 243013344443. The next prime is 243013344487. The reversal of 243013344451 is 154443310342.

243013344451 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.

It is a cyclic number.

It is not a de Polignac number, because 243013344451 - 2³ = 243013344443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243013344401) 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, 60419010 + ... + 60423031.

It is an arithmetic number, because the mean of its divisors is an integer number (60783547126).

Almost surely, 2^243013344451 is an apocalyptic number.

243013344451 is a deficient number, since it is larger than the sum of its proper divisors (120844053).

243013344451 is a wasteful number, since it uses less digits than its factorization.

243013344451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120844052.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 243013344451 its reverse (154443310342), we get a palindrome (397456654793).

The spelling of 243013344451 in words is "two hundred forty-three billion, thirteen million, three hundred forty-four thousand, four hundred fifty-one".