7447916161 has 6 divisors (see below), whose sum is σ = 8663902530. Its totient is φ = 6383928096.

The previous prime is 7447916159. The next prime is 7447916167. The reversal of 7447916161 is 1616197447.

It can be written as a sum of positive squares in only one way, i.e., 5539973761 + 1907942400 = 74431^2 + 43680^2 .

It is not a de Polignac number, because 7447916161 - 2¹ = 7447916159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7447916167) 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 5 ways as a sum of consecutive naturals, for example, 75999096 + ... + 75999193.

It is an arithmetic number, because the mean of its divisors is an integer number (1443983755).

Almost surely, 2^7447916161 is an apocalyptic number.

It is an amenable number.

7447916161 is a deficient number, since it is larger than the sum of its proper divisors (1215986369).

7447916161 is a wasteful number, since it uses less digits than its factorization.

7447916161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151998303 (or 151998296 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 7447916161 is about 86301.3103087085. The cubic root of 7447916161 is about 1952.8921502774.

The spelling of 7447916161 in words is "seven billion, four hundred forty-seven million, nine hundred sixteen thousand, one hundred sixty-one".