243412005513451 has 4 divisors (see below), whose sum is σ = 243412101131904. Its totient is φ = 243411909895000.

The previous prime is 243412005513427. The next prime is 243412005513473. The reversal of 243412005513451 is 154315500214342.

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 243412005513451 - 2²¹ = 243412003416299 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243412005513401) 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, 43883275 + ... + 49117876.

It is an arithmetic number, because the mean of its divisors is an integer number (60853025282976).

Almost surely, 2^{243412005513451} is an apocalyptic number.

243412005513451 is a deficient number, since it is larger than the sum of its proper divisors (95618453).

243412005513451 is an equidigital number, since it uses as much as digits as its factorization.

243412005513451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95618452.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 243412005513451 its reverse (154315500214342), we get a palindrome (397727505727793).

The spelling of 243412005513451 in words is "two hundred forty-three trillion, four hundred twelve billion, five million, five hundred thirteen thousand, four hundred fifty-one".