8779509645 has 16 divisors (see below), whose sum is σ = 14786543040. Its totient is φ = 4435962624.

The previous prime is 8779509643. The next prime is 8779509679. The reversal of 8779509645 is 5469059778.

8779509645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8779509645 - 2¹ = 8779509643 is a prime.

It is a super-3 number, since 3×8779509645³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8779509643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15402364 + ... + 15402933.

It is an arithmetic number, because the mean of its divisors is an integer number (924158940).

Almost surely, 2^8779509645 is an apocalyptic number.

It is an amenable number.

8779509645 is a deficient number, since it is larger than the sum of its proper divisors (6007033395).

8779509645 is a wasteful number, since it uses less digits than its factorization.

8779509645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30805324.

The product of its (nonzero) digits is 19051200, while the sum is 60.

The square root of 8779509645 is about 93699.0375884406. The cubic root of 8779509645 is about 2062.9565775605.

The spelling of 8779509645 in words is "eight billion, seven hundred seventy-nine million, five hundred nine thousand, six hundred forty-five".