8518551616 has 63 divisors (see below), whose sum is σ = 17234097231. Its totient is φ = 4177686144.

The previous prime is 8518551521. The next prime is 8518551647. The reversal of 8518551616 is 6161558158.

The square root of 8518551616 is 92296.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×8518551616² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 61284475 + ... + 61284613.

Almost surely, 2^8518551616 is an apocalyptic number.

8518551616 is the 92296-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8518551616

8518551616 is an abundant number, since it is smaller than the sum of its proper divisors (8715545615).

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

8518551616 is an frugal number, since it uses more digits than its factorization.

8518551616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 224 counting only the distinct ones).

The product of its digits is 288000, while the sum is 46.

The cubic root of 8518551616 is about 2042.3112034383.

It can be divided in two parts, 851855 and 1616, that added together give a triangular number (853471 = T₁₃₀₆).

The spelling of 8518551616 in words is "eight billion, five hundred eighteen million, five hundred fifty-one thousand, six hundred sixteen".