11091117890389 has 2 divisors, whose sum is σ = 11091117890390. Its totient is φ = 11091117890388.

The previous prime is 11091117890387. The next prime is 11091117890393. The reversal of 11091117890389 is 98309871119011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11017686104100 + 73431786289 = 3319290^2 + 270983^2 .

It is a cyclic number.

It is not a de Polignac number, because 11091117890389 - 2¹ = 11091117890387 is a prime.

Together with 11091117890387, 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 (11091117890383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5545558945194 + 5545558945195.

It is an arithmetic number, because the mean of its divisors is an integer number (5545558945195).

Almost surely, 2^{11091117890389} is an apocalyptic number.

It is an amenable number.

11091117890389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11091117890389 is an equidigital number, since it uses as much as digits as its factorization.

11091117890389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 58.

The spelling of 11091117890389 in words is "eleven trillion, ninety-one billion, one hundred seventeen million, eight hundred ninety thousand, three hundred eighty-nine".