18853988569542 has 80 divisors (see below), whose sum is σ = 48750931037952. Its totient is φ = 5334554291760.

The previous prime is 18853988569483. The next prime is 18853988569547. The reversal of 18853988569542 is 24596588935881.

18853988569542 is a `hidden beast` number, since 1 + 8 + 8 + 5 + 3 + 9 + 8 + 8 + 5 + 69 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18853988569547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 80592384 + ... + 80825987.

Almost surely, 2^{18853988569542} is an apocalyptic number.

18853988569542 is an abundant number, since it is smaller than the sum of its proper divisors (29896942468410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18853988569542 is a wasteful number, since it uses less digits than its factorization.

18853988569542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161418495 (or 161418486 counting only the distinct ones).

The product of its digits is 5971968000, while the sum is 81.

The spelling of 18853988569542 in words is "eighteen trillion, eight hundred fifty-three billion, nine hundred eighty-eight million, five hundred sixty-nine thousand, five hundred forty-two".