108199549969 has 27 divisors (see below), whose sum is σ = 127160938107. Its totient is φ = 92065519056.

The previous prime is 108199549963. The next prime is 108199549981. The reversal of 108199549969 is 969945991801.

The square root of 108199549969 is 328937.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 63556931025 + 44642618944 = 252105^2 + 211288^2 .

It is not a de Polignac number, because 108199549969 - 2⁵ = 108199549937 is a prime.

It is a super-2 number, since 2×108199549969² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 108199549898 and 108199549907.

It is not an unprimeable number, because it can be changed into a prime (108199549963) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 789777669 + ... + 789777805.

Almost surely, 2^108199549969 is an apocalyptic number.

108199549969 is the 328937-th square number.

108199549969 is the 164469-th centered octagonal number.

It is an amenable number.

108199549969 is a deficient number, since it is larger than the sum of its proper divisors (18961388138).

108199549969 is an frugal number, since it uses more digits than its factorization.

108199549969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 56687040, while the sum is 70.

The spelling of 108199549969 in words is "one hundred eight billion, one hundred ninety-nine million, five hundred forty-nine thousand, nine hundred sixty-nine".