16598421398349 has 64 divisors (see below), whose sum is σ = 28978377523200. Its totient is φ = 9193734328896.

The previous prime is 16598421398309. The next prime is 16598421398441. The reversal of 16598421398349 is 94389312489561.

16598421398349 is a `hidden beast` number, since 1 + 6 + 5 + 98 + 421 + 39 + 83 + 4 + 9 = 666.

16598421398349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16598421398349 - 2¹² = 16598421394253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16598421398309) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9150669 + ... + 10813490.

It is an arithmetic number, because the mean of its divisors is an integer number (452787148800).

Almost surely, 2^{16598421398349} is an apocalyptic number.

It is an amenable number.

16598421398349 is a deficient number, since it is larger than the sum of its proper divisors (12379956124851).

16598421398349 is a wasteful number, since it uses less digits than its factorization.

16598421398349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19964311 (or 19964305 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 72.

The spelling of 16598421398349 in words is "sixteen trillion, five hundred ninety-eight billion, four hundred twenty-one million, three hundred ninety-eight thousand, three hundred forty-nine".