11102166661591 has 2 divisors, whose sum is σ = 11102166661592. Its totient is φ = 11102166661590.

The previous prime is 11102166661589. The next prime is 11102166661667. The reversal of 11102166661591 is 19516666120111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11102166661591 - 2¹ = 11102166661589 is a prime.

Together with 11102166661589, 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 (11102166661501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551083330795 + 5551083330796.

It is an arithmetic number, because the mean of its divisors is an integer number (5551083330796).

Almost surely, 2^{11102166661591} is an apocalyptic number.

11102166661591 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102166661591 is an equidigital number, since it uses as much as digits as its factorization.

11102166661591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 46.

The spelling of 11102166661591 in words is "eleven trillion, one hundred two billion, one hundred sixty-six million, six hundred sixty-one thousand, five hundred ninety-one".