16720017006 has 32 divisors (see below), whose sum is σ = 41691472128. Its totient is φ = 4342861440.

The previous prime is 16720017001. The next prime is 16720017047. The reversal of 16720017006 is 60071002761.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16720017001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18094795 + ... + 18095718.

It is an arithmetic number, because the mean of its divisors is an integer number (1302858504).

Almost surely, 2^16720017006 is an apocalyptic number.

16720017006 is an abundant number, since it is smaller than the sum of its proper divisors (24971455122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16720017006 is a wasteful number, since it uses less digits than its factorization.

16720017006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36190536.

The product of its (nonzero) digits is 3528, while the sum is 30.

Adding to 16720017006 its reverse (60071002761), we get a palindrome (76791019767).

The spelling of 16720017006 in words is "sixteen billion, seven hundred twenty million, seventeen thousand, six".