8322249898561 has 9 divisors (see below), whose sum is σ = 8423968386211. Its totient is φ = 8221745271352.

The previous prime is 8322249898511. The next prime is 8322249898591. The reversal of 8322249898561 is 1658989422238.

The square root of 8322249898561 is 2884831.

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., 2010879983025 + 6311369915536 = 1418055^2 + 2512244^2 .

It is not a de Polignac number, because 8322249898561 - 2¹³ = 8322249890369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8322249898511) 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, 239423595 + ... + 239458351.

Almost surely, 2^{8322249898561} is an apocalyptic number.

8322249898561 is the 2884831-st square number.

8322249898561 is the 1442416-th centered octagonal number.

It is an amenable number.

8322249898561 is a deficient number, since it is larger than the sum of its proper divisors (101718487650).

8322249898561 is an frugal number, since it uses more digits than its factorization.

8322249898561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69680 (or 34840 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 67.

The spelling of 8322249898561 in words is "eight trillion, three hundred twenty-two billion, two hundred forty-nine million, eight hundred ninety-eight thousand, five hundred sixty-one".