11182919887889 has 2 divisors, whose sum is σ = 11182919887890. Its totient is φ = 11182919887888.

The previous prime is 11182919887883. The next prime is 11182919887897. The reversal of 11182919887889 is 98878891928111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8426712294400 + 2756207593489 = 2902880^2 + 1660183^2 .

It is a cyclic number.

It is not a de Polignac number, because 11182919887889 - 2¹⁶ = 11182919822353 is a prime.

It is not a weakly prime, because it can be changed into another prime (11182919887883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5591459943944 + 5591459943945.

It is an arithmetic number, because the mean of its divisors is an integer number (5591459943945).

Almost surely, 2^{11182919887889} is an apocalyptic number.

It is an amenable number.

11182919887889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11182919887889 is an equidigital number, since it uses as much as digits as its factorization.

11182919887889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 334430208, while the sum is 80.

The spelling of 11182919887889 in words is "eleven trillion, one hundred eighty-two billion, nine hundred nineteen million, eight hundred eighty-seven thousand, eight hundred eighty-nine".