2117240440849 has 2 divisors, whose sum is σ = 2117240440850. Its totient is φ = 2117240440848.

The previous prime is 2117240440837. The next prime is 2117240440867. The reversal of 2117240440849 is 9480440427112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1914791737600 + 202448703249 = 1383760^2 + 449943^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117240440849 - 2¹⁵ = 2117240408081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2117240440799 and 2117240440808.

It is not a weakly prime, because it can be changed into another prime (2117240447849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058620220424 + 1058620220425.

It is an arithmetic number, because the mean of its divisors is an integer number (1058620220425).

Almost surely, 2^{2117240440849} is an apocalyptic number.

It is an amenable number.

2117240440849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117240440849 is an equidigital number, since it uses as much as digits as its factorization.

2117240440849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 2117240440849 in words is "two trillion, one hundred seventeen billion, two hundred forty million, four hundred forty thousand, eight hundred forty-nine".