8280814521 has 16 divisors (see below), whose sum is σ = 12886861824. Its totient is φ = 4631214864.

The previous prime is 8280814513. The next prime is 8280814537. The reversal of 8280814521 is 1254180828.

It is not a de Polignac number, because 8280814521 - 2³ = 8280814513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8280814521.

It is not an unprimeable number, because it can be changed into a prime (8280814511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4193955 + ... + 4195928.

It is an arithmetic number, because the mean of its divisors is an integer number (805428864).

Almost surely, 2^8280814521 is an apocalyptic number.

It is an amenable number.

8280814521 is a deficient number, since it is larger than the sum of its proper divisors (4606047303).

8280814521 is a wasteful number, since it uses less digits than its factorization.

8280814521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389940.

The product of its (nonzero) digits is 40960, while the sum is 39.

The square root of 8280814521 is about 90998.9808789087. The cubic root of 8280814521 is about 2023.1326194843.

The spelling of 8280814521 in words is "eight billion, two hundred eighty million, eight hundred fourteen thousand, five hundred twenty-one".