18285715544 has 16 divisors (see below), whose sum is σ = 34287244920. Its totient is φ = 9142450240.

The previous prime is 18285715537. The next prime is 18285715579. The reversal of 18285715544 is 44551758281.

It is a junction number, because it is equal to n+sod(n) for n = 18285715492 and 18285715501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232559 + ... + 301089.

Almost surely, 2^18285715544 is an apocalyptic number.

It is an amenable number.

18285715544 is a deficient number, since it is larger than the sum of its proper divisors (16001529376).

18285715544 is a wasteful number, since it uses less digits than its factorization.

18285715544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101890 (or 101886 counting only the distinct ones).

The product of its digits is 1792000, while the sum is 50.

The spelling of 18285715544 in words is "eighteen billion, two hundred eighty-five million, seven hundred fifteen thousand, five hundred forty-four".