16620205712 has 30 divisors (see below), whose sum is σ = 35395204614. Its totient is φ = 7554638080.

The previous prime is 16620205699. The next prime is 16620205733. The reversal of 16620205712 is 21750202661.

16620205712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 16609023376 + 11182336 = 128876^2 + 3344^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4290473 + ... + 4294344.

Almost surely, 2^16620205712 is an apocalyptic number.

It is an amenable number.

16620205712 is an abundant number, since it is smaller than the sum of its proper divisors (18774998902).

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

16620205712 is a wasteful number, since it uses less digits than its factorization.

16620205712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8584847 (or 8584830 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 16620205712 in words is "sixteen billion, six hundred twenty million, two hundred five thousand, seven hundred twelve".