7166028720109 has 8 divisors (see below), whose sum is σ = 8288418761280. Its totient is φ = 6068306592096.

The previous prime is 7166028720079. The next prime is 7166028720121. The reversal of 7166028720109 is 9010278206617.

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

It is a de Polignac number, because none of the positive numbers 2^k-7166028720109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7166028120109) 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, 6166977664 + ... + 6166978825.

It is an arithmetic number, because the mean of its divisors is an integer number (1036052345160).

Almost surely, 2^{7166028720109} is an apocalyptic number.

It is an amenable number.

7166028720109 is a deficient number, since it is larger than the sum of its proper divisors (1122390041171).

7166028720109 is a wasteful number, since it uses less digits than its factorization.

7166028720109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12333956579.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 7166028720109 in words is "seven trillion, one hundred sixty-six billion, twenty-eight million, seven hundred twenty thousand, one hundred nine".