16565968308 has 24 divisors (see below), whose sum is σ = 40927686912. Its totient is φ = 5197166464.

The previous prime is 16565968283. The next prime is 16565968319. The reversal of 16565968308 is 80386956561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40602660 + ... + 40603067.

It is an arithmetic number, because the mean of its divisors is an integer number (1705320288).

Almost surely, 2^16565968308 is an apocalyptic number.

It is an amenable number.

16565968308 is an abundant number, since it is smaller than the sum of its proper divisors (24361718604).

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

16565968308 is a wasteful number, since it uses less digits than its factorization.

16565968308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81205751 (or 81205749 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 16565968308 in words is "sixteen billion, five hundred sixty-five million, nine hundred sixty-eight thousand, three hundred eight".