8815210397764 has 27 divisors (see below), whose sum is σ = 15459703178647. Its totient is φ = 4398172552448.

The previous prime is 8815210397731. The next prime is 8815210397771. The reversal of 8815210397764 is 4677930125188.

The square root of 8815210397764 is 2969042.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1253150391364 + 7562060006400 = 1119442^2 + 2749920^2 .

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, 3378768492 + ... + 3378771100.

It is a 2-persistent number, because it is pandigital, and so is 2⋅8815210397764 = 17630420795528, but 3⋅8815210397764 = 26445631193292 is not.

Almost surely, 2^{8815210397764} is an apocalyptic number.

8815210397764 is the 2969042-nd square number.

It is an amenable number.

8815210397764 is a deficient number, since it is larger than the sum of its proper divisors (6644492780883).

8815210397764 is an frugal number, since it uses more digits than its factorization.

8815210397764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360 (or 3180 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 8815210397764 in words is "eight trillion, eight hundred fifteen billion, two hundred ten million, three hundred ninety-seven thousand, seven hundred sixty-four".