2117199641 has 2 divisors, whose sum is σ = 2117199642. Its totient is φ = 2117199640.

The previous prime is 2117199631. The next prime is 2117199677. The reversal of 2117199641 is 1469917112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1492199641 + 625000000 = 38629^2 + 25000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117199641 - 2³⁰ = 1043457817 is a prime.

It is not a weakly prime, because it can be changed into another prime (2117199631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058599820 + 1058599821.

It is an arithmetic number, because the mean of its divisors is an integer number (1058599821).

Almost surely, 2^2117199641 is an apocalyptic number.

It is an amenable number.

2117199641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117199641 is an equidigital number, since it uses as much as digits as its factorization.

2117199641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 41.

The square root of 2117199641 is about 46013.0377284526. The cubic root of 2117199641 is about 1284.0657748563.

The spelling of 2117199641 in words is "two billion, one hundred seventeen million, one hundred ninety-nine thousand, six hundred forty-one".