8780509916 has 24 divisors (see below), whose sum is σ = 15900064320. Its totient is φ = 4237716672.

The previous prime is 8780509909. The next prime is 8780509921. The reversal of 8780509916 is 6199050878.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 550445 + ... + 566171.

It is an arithmetic number, because the mean of its divisors is an integer number (662502680).

Almost surely, 2^8780509916 is an apocalyptic number.

It is an amenable number.

8780509916 is a deficient number, since it is larger than the sum of its proper divisors (7119554404).

8780509916 is a wasteful number, since it uses less digits than its factorization.

8780509916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20573 (or 20571 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 8780509916 is about 93704.3751166401. The cubic root of 8780509916 is about 2063.0349204809.

The spelling of 8780509916 in words is "eight billion, seven hundred eighty million, five hundred nine thousand, nine hundred sixteen".