16722040657 has 8 divisors (see below), whose sum is σ = 20116740800. Its totient is φ = 13578799824.

The previous prime is 16722040649. The next prime is 16722040663. The reversal of 16722040657 is 75604022761.

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 16722040657 - 2³ = 16722040649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16722044657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62864682 + ... + 62864947.

It is an arithmetic number, because the mean of its divisors is an integer number (2514592600).

Almost surely, 2^16722040657 is an apocalyptic number.

It is an amenable number.

16722040657 is a deficient number, since it is larger than the sum of its proper divisors (3394700143).

16722040657 is a wasteful number, since it uses less digits than its factorization.

16722040657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125729655.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 16722040657 in words is "sixteen billion, seven hundred twenty-two million, forty thousand, six hundred fifty-seven".