16721766030 has 16 divisors (see below), whose sum is σ = 40132238544. Its totient is φ = 4459137600.

The previous prime is 16721766013. The next prime is 16721766037. The reversal of 16721766030 is 3066712761.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16721766030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16721766037) 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 7 ways as a sum of consecutive naturals, for example, 278696071 + ... + 278696130.

It is an arithmetic number, because the mean of its divisors is an integer number (2508264909).

Almost surely, 2^16721766030 is an apocalyptic number.

16721766030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16721766030 is an abundant number, since it is smaller than the sum of its proper divisors (23410472514).

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

16721766030 is a wasteful number, since it uses less digits than its factorization.

16721766030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557392211.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 16721766030 in words is "sixteen billion, seven hundred twenty-one million, seven hundred sixty-six thousand, thirty".