18263707545543 has 8 divisors (see below), whose sum is σ = 24365743329408. Its totient is φ = 12168738396024.

The previous prime is 18263707545467. The next prime is 18263707545563. The reversal of 18263707545543 is 34554570736281.

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

It is not a de Polignac number, because 18263707545543 - 2¹³ = 18263707537351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18263707545563) 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, 1766652555 + ... + 1766662892.

It is an arithmetic number, because the mean of its divisors is an integer number (3045717916176).

Almost surely, 2^{18263707545543} is an apocalyptic number.

18263707545543 is a deficient number, since it is larger than the sum of its proper divisors (6102035783865).

18263707545543 is a wasteful number, since it uses less digits than its factorization.

18263707545543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533317173.

The product of its (nonzero) digits is 84672000, while the sum is 60.

The spelling of 18263707545543 in words is "eighteen trillion, two hundred sixty-three billion, seven hundred seven million, five hundred forty-five thousand, five hundred forty-three".