243102451203543 has 16 divisors (see below), whose sum is σ = 334596024907776. Its totient is φ = 156838695522720.

The previous prime is 243102451203541. The next prime is 243102451203581. The reversal of 243102451203543 is 345302154201342.

It is a happy number.

It is not a de Polignac number, because 243102451203543 - 2¹ = 243102451203541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243102451203541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4071480 + ... + 22422797.

It is an arithmetic number, because the mean of its divisors is an integer number (20912251556736).

Almost surely, 2^{243102451203543} is an apocalyptic number.

243102451203543 is a deficient number, since it is larger than the sum of its proper divisors (91493573704233).

243102451203543 is a wasteful number, since it uses less digits than its factorization.

243102451203543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26592974.

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 243102451203543 in words is "two hundred forty-three trillion, one hundred two billion, four hundred fifty-one million, two hundred three thousand, five hundred forty-three".