2166970282209 has 24 divisors (see below), whose sum is σ = 3161304761472. Its totient is φ = 1430232199200.

The previous prime is 2166970282201. The next prime is 2166970282219. The reversal of 2166970282209 is 9022820796612.

2166970282209 is a `hidden beast` number, since 216 + 69 + 70 + 282 + 20 + 9 = 666.

It is not a de Polignac number, because 2166970282209 - 2³ = 2166970282201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2166970282201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12552094 + ... + 12723560.

It is an arithmetic number, because the mean of its divisors is an integer number (131721031728).

Almost surely, 2^{2166970282209} is an apocalyptic number.

It is an amenable number.

2166970282209 is a deficient number, since it is larger than the sum of its proper divisors (994334479263).

2166970282209 is a wasteful number, since it uses less digits than its factorization.

2166970282209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185477 (or 185474 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 2166970282209 in words is "two trillion, one hundred sixty-six billion, nine hundred seventy million, two hundred eighty-two thousand, two hundred nine".