16721462272 has 22 divisors (see below), whose sum is σ = 33426597038. Its totient is φ = 8360730624.

The previous prime is 16721462269. The next prime is 16721462291. The reversal of 16721462272 is 27226412761.

It can be written as a sum of positive squares in only one way, i.e., 13807190016 + 2914272256 = 117504^2 + 53984^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8163753 + ... + 8165800.

Almost surely, 2^16721462272 is an apocalyptic number.

It is an amenable number.

16721462272 is a deficient number, since it is larger than the sum of its proper divisors (16705134766).

16721462272 is an equidigital number, since it uses as much as digits as its factorization.

16721462272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16329573 (or 16329555 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The spelling of 16721462272 in words is "sixteen billion, seven hundred twenty-one million, four hundred sixty-two thousand, two hundred seventy-two".