8216386547776 has 63 divisors (see below), whose sum is σ = 17921906764573. Its totient is φ = 3734606501120.

The previous prime is 8216386547771. The next prime is 8216386547797. The reversal of 8216386547776 is 6777456836128.

The square root of 8216386547776 is 2866424.

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

It can be written as a sum of positive squares in only one way, i.e., 60929985600 + 8155456562176 = 246840^2 + 2855776^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8216386547771) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 252229026 + ... + 252261598.

Almost surely, 2^{8216386547776} is an apocalyptic number.

8216386547776 is the 2866424-th square number.

It is an amenable number.

8216386547776 is an abundant number, since it is smaller than the sum of its proper divisors (9705520216797).

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

8216386547776 is an frugal number, since it uses more digits than its factorization.

8216386547776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65180 (or 32586 counting only the distinct ones).

The product of its digits is 568995840, while the sum is 70.

The spelling of 8216386547776 in words is "eight trillion, two hundred sixteen billion, three hundred eighty-six million, five hundred forty-seven thousand, seven hundred seventy-six".