16680822469 has 2 divisors, whose sum is σ = 16680822470. Its totient is φ = 16680822468.

The previous prime is 16680822451. The next prime is 16680822511. The reversal of 16680822469 is 96422808661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10193325444 + 6487497025 = 100962^2 + 80545^2 .

It is a cyclic number.

It is not a de Polignac number, because 16680822469 - 2¹¹ = 16680820421 is a prime.

It is a super-2 number, since 2×16680822469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16680822439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8340411234 + 8340411235.

It is an arithmetic number, because the mean of its divisors is an integer number (8340411235).

Almost surely, 2^16680822469 is an apocalyptic number.

It is an amenable number.

16680822469 is a deficient number, since it is larger than the sum of its proper divisors (1).

16680822469 is an equidigital number, since it uses as much as digits as its factorization.

16680822469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 16680822469 in words is "sixteen billion, six hundred eighty million, eight hundred twenty-two thousand, four hundred sixty-nine".