16491553198 has 8 divisors (see below), whose sum is σ = 25405906392. Its totient is φ = 8022917736.

The previous prime is 16491553109. The next prime is 16491553223. The reversal of 16491553198 is 89135519461.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 111429340 + ... + 111429487.

It is an arithmetic number, because the mean of its divisors is an integer number (3175738299).

Almost surely, 2^16491553198 is an apocalyptic number.

16491553198 is a deficient number, since it is larger than the sum of its proper divisors (8914353194).

16491553198 is a wasteful number, since it uses less digits than its factorization.

16491553198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222858866.

The product of its digits is 1166400, while the sum is 52.

The spelling of 16491553198 in words is "sixteen billion, four hundred ninety-one million, five hundred fifty-three thousand, one hundred ninety-eight".