16672205694722 has 18 divisors (see below), whose sum is σ = 25387727036553. Its totient is φ = 8211492844632.

The previous prime is 16672205694713. The next prime is 16672205694743. The reversal of 16672205694722 is 22749650227661.

It can be written as a sum of positive squares in 2 ways, for example, as 16027619909401 + 644585785321 = 4003451^2 + 802861^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2887231.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 386867408 + ... + 386910500.

Almost surely, 2^{16672205694722} is an apocalyptic number.

16672205694722 is a deficient number, since it is larger than the sum of its proper divisors (8715521341831).

16672205694722 is an frugal number, since it uses more digits than its factorization.

16672205694722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86322 (or 43162 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 16672205694722 in words is "sixteen trillion, six hundred seventy-two billion, two hundred five million, six hundred ninety-four thousand, seven hundred twenty-two".