16205656616 has 32 divisors (see below), whose sum is σ = 30716736960. Its totient is φ = 8014712832.

The previous prime is 16205656613. The next prime is 16205656637. The reversal of 16205656616 is 61665650261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16205656613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716456 + ... + 738728.

It is an arithmetic number, because the mean of its divisors is an integer number (959898030).

Almost surely, 2^16205656616 is an apocalyptic number.

It is an amenable number.

16205656616 is a deficient number, since it is larger than the sum of its proper divisors (14511080344).

16205656616 is a wasteful number, since it uses less digits than its factorization.

16205656616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23265 (or 23261 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 16205656616 in words is "sixteen billion, two hundred five million, six hundred fifty-six thousand, six hundred sixteen".