16806720133 has 8 divisors (see below), whose sum is σ = 19358922752. Its totient is φ = 14292328176.

The previous prime is 16806720113. The next prime is 16806720143. The reversal of 16806720133 is 33102760861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16806720133 - 2²¹ = 16804622981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16806720092 and 16806720101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16806720113) 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, 9451710 + ... + 9453487.

It is an arithmetic number, because the mean of its divisors is an integer number (2419865344).

Almost surely, 2^16806720133 is an apocalyptic number.

It is an amenable number.

16806720133 is a deficient number, since it is larger than the sum of its proper divisors (2552202619).

16806720133 is a wasteful number, since it uses less digits than its factorization.

16806720133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18905331.

The product of its (nonzero) digits is 36288, while the sum is 37.

It can be divided in two parts, 1680672013 and 3, that added together give a square (1680672016 = 40996²).

The spelling of 16806720133 in words is "sixteen billion, eight hundred six million, seven hundred twenty thousand, one hundred thirty-three".