16533109456 has 20 divisors (see below), whose sum is σ = 32036234272. Its totient is φ = 8265694176.

The previous prime is 16533109403. The next prime is 16533109469. The reversal of 16533109456 is 65490133561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 122155 + ... + 219061.

Almost surely, 2^16533109456 is an apocalyptic number.

16533109456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16533109456 is a deficient number, since it is larger than the sum of its proper divisors (15503124816).

16533109456 is a wasteful number, since it uses less digits than its factorization.

16533109456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107578 (or 107572 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 16533109456 in words is "sixteen billion, five hundred thirty-three million, one hundred nine thousand, four hundred fifty-six".