16725821706 has 64 divisors (see below), whose sum is σ = 41048150400. Its totient is φ = 5068416240.

The previous prime is 16725821701. The next prime is 16725821729. The reversal of 16725821706 is 60712852761.

16725821706 is a `hidden beast` number, since 1 + 67 + 2 + 582 + 1 + 7 + 0 + 6 = 666.

It is a super-2 number, since 2×16725821706² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16725821701) 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 31 ways as a sum of consecutive naturals, for example, 125701 + ... + 221928.

It is an arithmetic number, because the mean of its divisors is an integer number (641377350).

Almost surely, 2^16725821706 is an apocalyptic number.

16725821706 is an abundant number, since it is smaller than the sum of its proper divisors (24322328694).

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

16725821706 is an equidigital number, since it uses as much as digits as its factorization.

16725821706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347663 (or 347645 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 16725821706 in words is "sixteen billion, seven hundred twenty-five million, eight hundred twenty-one thousand, seven hundred six".