9910665841 has 2 divisors, whose sum is σ = 9910665842. Its totient is φ = 9910665840.

The previous prime is 9910665781. The next prime is 9910665847. The reversal of 9910665841 is 1485660199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5411073600 + 4499592241 = 73560^2 + 67079^2 .

It is a cyclic number.

It is not a de Polignac number, because 9910665841 - 2⁹ = 9910665329 is a prime.

It is not a weakly prime, because it can be changed into another prime (9910665847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955332920 + 4955332921.

It is an arithmetic number, because the mean of its divisors is an integer number (4955332921).

Almost surely, 2^9910665841 is an apocalyptic number.

It is an amenable number.

9910665841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9910665841 is an equidigital number, since it uses as much as digits as its factorization.

9910665841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 9910665841 is about 99552.3271500973. The cubic root of 9910665841 is about 2148.0000035400. Note that the first 5 decimals are identical.

Subtracting from 9910665841 its sum of digits (49), we obtain a cube (9910665792 = 2148³).

The spelling of 9910665841 in words is "nine billion, nine hundred ten million, six hundred sixty-five thousand, eight hundred forty-one".