8515456672 has 36 divisors (see below), whose sum is σ = 17808999390. Its totient is φ = 4007269376.

The previous prime is 8515456669. The next prime is 8515456679. The reversal of 8515456672 is 2766545158.

It can be written as a sum of positive squares in 3 ways, for example, as 8041784976 + 473671696 = 89676^2 + 21764^2 .

It is not an unprimeable number, because it can be changed into a prime (8515456679) 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, 451147 + ... + 469642.

Almost surely, 2^8515456672 is an apocalyptic number.

It is an amenable number.

8515456672 is an abundant number, since it is smaller than the sum of its proper divisors (9293542718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8515456672 is a wasteful number, since it uses less digits than its factorization.

8515456672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920833 (or 920808 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 49.

The square root of 8515456672 is about 92279.2320730943. The cubic root of 8515456672 is about 2042.0638372687.

The spelling of 8515456672 in words is "eight billion, five hundred fifteen million, four hundred fifty-six thousand, six hundred seventy-two".