8509782716 has 12 divisors (see below), whose sum is σ = 15255342480. Its totient is φ = 4151113440.

The previous prime is 8509782691. The next prime is 8509782731. The reversal of 8509782716 is 6172879058.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25944296 + ... + 25944623.

It is an arithmetic number, because the mean of its divisors is an integer number (1271278540).

Almost surely, 2^8509782716 is an apocalyptic number.

It is an amenable number.

8509782716 is a deficient number, since it is larger than the sum of its proper divisors (6745559764).

8509782716 is a wasteful number, since it uses less digits than its factorization.

8509782716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51888964 (or 51888962 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 53.

The square root of 8509782716 is about 92248.4835430914. The cubic root of 8509782716 is about 2041.6101855470.

The spelling of 8509782716 in words is "eight billion, five hundred nine million, seven hundred eighty-two thousand, seven hundred sixteen".