22782808969 has 2 divisors, whose sum is σ = 22782808970. Its totient is φ = 22782808968.

The previous prime is 22782808921. The next prime is 22782809011. The reversal of 22782808969 is 96980828722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12544000000 + 10238808969 = 112000^2 + 101187^2 .

It is a cyclic number.

It is not a de Polignac number, because 22782808969 - 2⁹ = 22782808457 is a prime.

It is a super-2 number, since 2×22782808969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22782808469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11391404484 + 11391404485.

It is an arithmetic number, because the mean of its divisors is an integer number (11391404485).

Almost surely, 2^22782808969 is an apocalyptic number.

It is an amenable number.

22782808969 is a deficient number, since it is larger than the sum of its proper divisors (1).

22782808969 is an equidigital number, since it uses as much as digits as its factorization.

22782808969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 22782808969 in words is "twenty-two billion, seven hundred eighty-two million, eight hundred eight thousand, nine hundred sixty-nine".