16580949829 has 2 divisors, whose sum is σ = 16580949830. Its totient is φ = 16580949828.

The previous prime is 16580949817. The next prime is 16580949863. The reversal of 16580949829 is 92894908561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16027053604 + 553896225 = 126598^2 + 23535^2 .

It is a cyclic number.

It is not a de Polignac number, because 16580949829 - 2¹⁵ = 16580917061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16580949899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8290474914 + 8290474915.

It is an arithmetic number, because the mean of its divisors is an integer number (8290474915).

Almost surely, 2^16580949829 is an apocalyptic number.

It is an amenable number.

16580949829 is a deficient number, since it is larger than the sum of its proper divisors (1).

16580949829 is an equidigital number, since it uses as much as digits as its factorization.

16580949829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 16580949829 in words is "sixteen billion, five hundred eighty million, nine hundred forty-nine thousand, eight hundred twenty-nine".