11195218260887 has 2 divisors, whose sum is σ = 11195218260888. Its totient is φ = 11195218260886.

The previous prime is 11195218260791. The next prime is 11195218260893. The reversal of 11195218260887 is 78806281259111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11195218260887 - 2²² = 11195214066583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11195218260487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5597609130443 + 5597609130444.

It is an arithmetic number, because the mean of its divisors is an integer number (5597609130444).

Almost surely, 2^{11195218260887} is an apocalyptic number.

11195218260887 is a deficient number, since it is larger than the sum of its proper divisors (1).

11195218260887 is an equidigital number, since it uses as much as digits as its factorization.

11195218260887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 59.

The spelling of 11195218260887 in words is "eleven trillion, one hundred ninety-five billion, two hundred eighteen million, two hundred sixty thousand, eight hundred eighty-seven".