18358049185542 has 96 divisors (see below), whose sum is σ = 43625303654400. Its totient is φ = 5533111296000.

The previous prime is 18358049185481. The next prime is 18358049185583. The reversal of 18358049185542 is 24558194085381.

18358049185542 is a `hidden beast` number, since 1 + 8 + 3 + 5 + 8 + 0 + 4 + 9 + 1 + 85 + 542 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18358049185542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 290448459 + ... + 290511657.

It is an arithmetic number, because the mean of its divisors is an integer number (454430246400).

Almost surely, 2^{18358049185542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18358049185542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21812651827200).

18358049185542 is an abundant number, since it is smaller than the sum of its proper divisors (25267254468858).

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

18358049185542 is a wasteful number, since it uses less digits than its factorization.

18358049185542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71090 (or 71087 counting only the distinct ones).

The product of its (nonzero) digits is 55296000, while the sum is 63.

The spelling of 18358049185542 in words is "eighteen trillion, three hundred fifty-eight billion, forty-nine million, one hundred eighty-five thousand, five hundred forty-two".