8564278916 has 6 divisors (see below), whose sum is σ = 14987488110. Its totient is φ = 4282139456.

The previous prime is 8564278901. The next prime is 8564278939. The reversal of 8564278916 is 6198724658.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8193870400 + 370408516 = 90520^2 + 19246^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1070534861 + ... + 1070534868.

It is an arithmetic number, because the mean of its divisors is an integer number (2497914685).

Almost surely, 2^8564278916 is an apocalyptic number.

It is an amenable number.

8564278916 is a deficient number, since it is larger than the sum of its proper divisors (6423209194).

8564278916 is a wasteful number, since it uses less digits than its factorization.

8564278916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141069733 (or 2141069731 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 56.

The square root of 8564278916 is about 92543.3893695276. The cubic root of 8564278916 is about 2045.9590367858.

The spelling of 8564278916 in words is "eight billion, five hundred sixty-four million, two hundred seventy-eight thousand, nine hundred sixteen".