16656705772 has 12 divisors (see below), whose sum is σ = 33313411600. Its totient is φ = 7138588176.

The previous prime is 16656705743. The next prime is 16656705781. The reversal of 16656705772 is 27750765661.

It is a happy number.

16656705772 is an admirable 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, 297441147 + ... + 297441202.

Almost surely, 2^16656705772 is an apocalyptic number.

It is an amenable number.

16656705772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16656705772 is a wasteful number, since it uses less digits than its factorization.

16656705772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594882360 (or 594882358 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 16656705772 in words is "sixteen billion, six hundred fifty-six million, seven hundred five thousand, seven hundred seventy-two".