18606203457443 has 24 divisors (see below), whose sum is σ = 21673293081264. Its totient is φ = 15926568537600.

The previous prime is 18606203457409. The next prime is 18606203457467. The reversal of 18606203457443 is 34475430260681.

It is not a de Polignac number, because 18606203457443 - 2³² = 18601908490147 is a prime.

It is a super-2 number, since 2×18606203457443² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18606203457043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108417263 + ... + 108588743.

It is an arithmetic number, because the mean of its divisors is an integer number (903053878386).

Almost surely, 2^{18606203457443} is an apocalyptic number.

18606203457443 is a deficient number, since it is larger than the sum of its proper divisors (3067089623821).

18606203457443 is a wasteful number, since it uses less digits than its factorization.

18606203457443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174483 (or 174476 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 18606203457443 in words is "eighteen trillion, six hundred six billion, two hundred three million, four hundred fifty-seven thousand, four hundred forty-three".