16722644125 has 16 divisors (see below), whose sum is σ = 22767121728. Its totient is φ = 12161922000.

The previous prime is 16722644117. The next prime is 16722644131. The reversal of 16722644125 is 52144622761.

It is a happy number.

It is not a de Polignac number, because 16722644125 - 2³ = 16722644117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6079587 + ... + 6082336.

It is an arithmetic number, because the mean of its divisors is an integer number (1422945108).

Almost surely, 2^16722644125 is an apocalyptic number.

It is an amenable number.

16722644125 is a deficient number, since it is larger than the sum of its proper divisors (6044477603).

16722644125 is a wasteful number, since it uses less digits than its factorization.

16722644125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12161949 (or 12161939 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The spelling of 16722644125 in words is "sixteen billion, seven hundred twenty-two million, six hundred forty-four thousand, one hundred twenty-five".