16568916722 has 6 divisors (see below), whose sum is σ = 24853648143. Its totient is φ = 8284367342.

The previous prime is 16568916719. The next prime is 16568916739. The reversal of 16568916722 is 22761986561.

It can be written as a sum of positive squares in only one way, i.e., 8284458361 + 8284458361 = 91019^2 + 91019^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=91019.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 136529 + ... + 227547.

Almost surely, 2^16568916722 is an apocalyptic number.

16568916722 is a deficient number, since it is larger than the sum of its proper divisors (8284731421).

16568916722 is an frugal number, since it uses more digits than its factorization.

16568916722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182040 (or 91021 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The spelling of 16568916722 in words is "sixteen billion, five hundred sixty-eight million, nine hundred sixteen thousand, seven hundred twenty-two".