7016166721 has 16 divisors (see below), whose sum is σ = 7520408064. Its totient is φ = 6530185024.

The previous prime is 7016166719. The next prime is 7016166737. The reversal of 7016166721 is 1276616107.

It is not a de Polignac number, because 7016166721 - 2¹ = 7016166719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7016166761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168255 + ... + 205771.

It is an arithmetic number, because the mean of its divisors is an integer number (470025504).

Almost surely, 2^7016166721 is an apocalyptic number.

It is an amenable number.

7016166721 is a deficient number, since it is larger than the sum of its proper divisors (504241343).

7016166721 is a wasteful number, since it uses less digits than its factorization.

7016166721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37760.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 7016166721 is about 83762.5615713846. The cubic root of 7016166721 is about 1914.4027088280.

The spelling of 7016166721 in words is "seven billion, sixteen million, one hundred sixty-six thousand, seven hundred twenty-one".