2117648653 has 2 divisors, whose sum is σ = 2117648654. Its totient is φ = 2117648652.

The previous prime is 2117648651. The next prime is 2117648669. The reversal of 2117648653 is 3568467112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1541504644 + 576144009 = 39262^2 + 24003^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117648653 - 2¹ = 2117648651 is a prime.

Together with 2117648651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2117648651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058824326 + 1058824327.

It is an arithmetic number, because the mean of its divisors is an integer number (1058824327).

Almost surely, 2^2117648653 is an apocalyptic number.

It is an amenable number.

2117648653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117648653 is an equidigital number, since it uses as much as digits as its factorization.

2117648653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 2117648653 is about 46017.9166521041. The cubic root of 2117648653 is about 1284.1565425819.

The spelling of 2117648653 in words is "two billion, one hundred seventeen million, six hundred forty-eight thousand, six hundred fifty-three".