16722040651 has 4 divisors (see below), whose sum is σ = 16723988512. Its totient is φ = 16720092792.

The previous prime is 16722040649. The next prime is 16722040663. The reversal of 16722040651 is 15604022761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16722040651 - 2¹ = 16722040649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16722040151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960996 + ... + 978241.

It is an arithmetic number, because the mean of its divisors is an integer number (4180997128).

Almost surely, 2^16722040651 is an apocalyptic number.

16722040651 is a deficient number, since it is larger than the sum of its proper divisors (1947861).

16722040651 is an equidigital number, since it uses as much as digits as its factorization.

16722040651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947860.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 16722040651 in words is "sixteen billion, seven hundred twenty-two million, forty thousand, six hundred fifty-one".