7266188161 has 16 divisors (see below), whose sum is σ = 7734596688. Its totient is φ = 6802432000.

The previous prime is 7266188159. The next prime is 7266188191. The reversal of 7266188161 is 1618816627.

7266188161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2082188161 + 5184000000 = 45631^2 + 72000^2 .

It is a cyclic number.

It is not a de Polignac number, because 7266188161 - 2¹ = 7266188159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7266188191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3490641 + ... + 3492721.

It is an arithmetic number, because the mean of its divisors is an integer number (483412293).

Almost surely, 2^7266188161 is an apocalyptic number.

It is an amenable number.

7266188161 is a deficient number, since it is larger than the sum of its proper divisors (468408527).

7266188161 is a wasteful number, since it uses less digits than its factorization.

7266188161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092.

The product of its digits is 193536, while the sum is 46.

The square root of 7266188161 is about 85241.9389795891. The cubic root of 7266188161 is about 1936.8777638422.

The spelling of 7266188161 in words is "seven billion, two hundred sixty-six million, one hundred eighty-eight thousand, one hundred sixty-one".