16969988205 has 12 divisors (see below), whose sum is σ = 29414646300. Its totient is φ = 9050660352.

The previous prime is 16969988197. The next prime is 16969988209. The reversal of 16969988205 is 50288996961.

It can be written as a sum of positive squares in 2 ways, for example, as 1724159529 + 15245828676 = 41523^2 + 123474^2 .

It is not a de Polignac number, because 16969988205 - 2³ = 16969988197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16969988209) 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 in 11 ways as a sum of consecutive naturals, for example, 188555380 + ... + 188555469.

It is an arithmetic number, because the mean of its divisors is an integer number (2451220525).

Almost surely, 2^16969988205 is an apocalyptic number.

16969988205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16969988205 is a deficient number, since it is larger than the sum of its proper divisors (12444658095).

16969988205 is a wasteful number, since it uses less digits than its factorization.

16969988205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377110860 (or 377110857 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 16969988205 in words is "sixteen billion, nine hundred sixty-nine million, nine hundred eighty-eight thousand, two hundred five".