16706771720020 has 24 divisors (see below), whose sum is σ = 35478425341800. Its totient is φ = 6607622072832.

The previous prime is 16706771720017. The next prime is 16706771720029. The reversal of 16706771720020 is 2002717760761.

It can be written as a sum of positive squares in 4 ways, for example, as 3409503162256 + 13297268557764 = 1846484^2 + 3646542^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16706771720029) 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, 4692911625 + ... + 4692915184.

It is an arithmetic number, because the mean of its divisors is an integer number (1478267722575).

Almost surely, 2^{16706771720020} is an apocalyptic number.

16706771720020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16706771720020 is an abundant number, since it is smaller than the sum of its proper divisors (18771653621780).

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

16706771720020 is a wasteful number, since it uses less digits than its factorization.

16706771720020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9385826907 (or 9385826905 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 46.

The spelling of 16706771720020 in words is "sixteen trillion, seven hundred six billion, seven hundred seventy-one million, seven hundred twenty thousand, twenty".