16469628649 has 2 divisors, whose sum is σ = 16469628650. Its totient is φ = 16469628648.

The previous prime is 16469628631. The next prime is 16469628661. The reversal of 16469628649 is 94682696461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16120873024 + 348755625 = 126968^2 + 18675^2 .

It is a cyclic number.

It is not a de Polignac number, because 16469628649 - 2¹¹ = 16469626601 is a prime.

It is not a weakly prime, because it can be changed into another prime (16469628689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8234814324 + 8234814325.

It is an arithmetic number, because the mean of its divisors is an integer number (8234814325).

Almost surely, 2^16469628649 is an apocalyptic number.

It is an amenable number.

16469628649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16469628649 is an equidigital number, since it uses as much as digits as its factorization.

16469628649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26873856, while the sum is 61.

The spelling of 16469628649 in words is "sixteen billion, four hundred sixty-nine million, six hundred twenty-eight thousand, six hundred forty-nine".