16722645247 has 8 divisors (see below), whose sum is σ = 20849012352. Its totient is φ = 13030632600.

The previous prime is 16722645229. The next prime is 16722645263. The reversal of 16722645247 is 74254622761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16722645247 - 2¹¹ = 16722643199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16722645197 and 16722645206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16722645227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 108588529 + ... + 108588682.

It is an arithmetic number, because the mean of its divisors is an integer number (2606126544).

Almost surely, 2^16722645247 is an apocalyptic number.

16722645247 is a deficient number, since it is larger than the sum of its proper divisors (4126367105).

16722645247 is a wasteful number, since it uses less digits than its factorization.

16722645247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217177229.

The product of its digits is 1128960, while the sum is 46.

The spelling of 16722645247 in words is "sixteen billion, seven hundred twenty-two million, six hundred forty-five thousand, two hundred forty-seven".