22165680380265 has 20 divisors (see below), whose sum is σ = 39734034460164. Its totient is φ = 11821696202592.

The previous prime is 22165680380227. The next prime is 22165680380329. The reversal of 22165680380265 is 56208308656122.

22165680380265 is a `hidden beast` number, since 2 + 2 + 16 + 568 + 0 + 3 + 8 + 0 + 2 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15183592871769 + 6982087508496 = 3896613^2 + 2642364^2 .

It is not a de Polignac number, because 22165680380265 - 2³⁵ = 22131320641897 is a prime.

It is an unprimeable number.

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 in 19 ways as a sum of consecutive naturals, for example, 27365037102 + ... + 27365037911.

Almost surely, 2^{22165680380265} is an apocalyptic number.

It is an amenable number.

22165680380265 is a deficient number, since it is larger than the sum of its proper divisors (17568354079899).

22165680380265 is an equidigital number, since it uses as much as digits as its factorization.

22165680380265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54730075030 (or 54730075021 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 22165680380265 in words is "twenty-two trillion, one hundred sixty-five billion, six hundred eighty million, three hundred eighty thousand, two hundred sixty-five".