220651669849 has 16 divisors (see below), whose sum is σ = 252159062400. Its totient is φ = 191520781056.

The previous prime is 220651669841. The next prime is 220651669871. The reversal of 220651669849 is 948966156022.

It is a cyclic number.

It is not a de Polignac number, because 220651669849 - 2³ = 220651669841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220651669793 and 220651669802.

It is not an unprimeable number, because it can be changed into a prime (220651669841) 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 15 ways as a sum of consecutive naturals, for example, 6236304 + ... + 6271585.

It is an arithmetic number, because the mean of its divisors is an integer number (15759941400).

Almost surely, 2^220651669849 is an apocalyptic number.

It is an amenable number.

220651669849 is a deficient number, since it is larger than the sum of its proper divisors (31507392551).

220651669849 is a wasteful number, since it uses less digits than its factorization.

220651669849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507984.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 220651669849 in words is "two hundred twenty billion, six hundred fifty-one million, six hundred sixty-nine thousand, eight hundred forty-nine".