16533552120 has 64 divisors (see below), whose sum is σ = 50941228320. Its totient is φ = 4289785344.

The previous prime is 16533552103. The next prime is 16533552143. The reversal of 16533552120 is 2125533561.

It is a happy number.

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, 1857447 + ... + 1866326.

Almost surely, 2^16533552120 is an apocalyptic number.

16533552120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16533552120 is an abundant number, since it is smaller than the sum of its proper divisors (34407676200).

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

16533552120 is a wasteful number, since it uses less digits than its factorization.

16533552120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723824 (or 3723820 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 16533552120 in words is "sixteen billion, five hundred thirty-three million, five hundred fifty-two thousand, one hundred twenty".