8999872782281 has 2 divisors, whose sum is σ = 8999872782282. Its totient is φ = 8999872782280.

The previous prime is 8999872782233. The next prime is 8999872782289. The reversal of 8999872782281 is 1822872789998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8053727492281 + 946145290000 = 2837909^2 + 972700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8999872782281 is a prime.

It is a super-2 number, since 2×8999872782281² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8999872782196 and 8999872782205.

It is not a weakly prime, because it can be changed into another prime (8999872782289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4499936391140 + 4499936391141.

It is an arithmetic number, because the mean of its divisors is an integer number (4499936391141).

Almost surely, 2^{8999872782281} is an apocalyptic number.

It is an amenable number.

8999872782281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8999872782281 is an equidigital number, since it uses as much as digits as its factorization.

8999872782281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1170505728, while the sum is 80.

The spelling of 8999872782281 in words is "eight trillion, nine hundred ninety-nine billion, eight hundred seventy-two million, seven hundred eighty-two thousand, two hundred eighty-one".