16218386549934 has 32 divisors (see below), whose sum is σ = 32987410807680. Its totient is φ = 5314360687200.

The previous prime is 16218386549861. The next prime is 16218386549941. The reversal of 16218386549934 is 43994568381261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13432929 + ... + 14590419.

It is an arithmetic number, because the mean of its divisors is an integer number (1030856587740).

Almost surely, 2^{16218386549934} is an apocalyptic number.

16218386549934 is an abundant number, since it is smaller than the sum of its proper divisors (16769024257746).

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

16218386549934 is a wasteful number, since it uses less digits than its factorization.

16218386549934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197136.

The product of its digits is 268738560, while the sum is 69.

The spelling of 16218386549934 in words is "sixteen trillion, two hundred eighteen billion, three hundred eighty-six million, five hundred forty-nine thousand, nine hundred thirty-four".