11554496221889 has 2 divisors, whose sum is σ = 11554496221890. Its totient is φ = 11554496221888.

The previous prime is 11554496221817. The next prime is 11554496221921. The reversal of 11554496221889 is 98812269445511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11540913484864 + 13582737025 = 3397192^2 + 116545^2 .

It is a cyclic number.

It is not a de Polignac number, because 11554496221889 - 2²⁰ = 11554495173313 is a prime.

It is not a weakly prime, because it can be changed into another prime (11554496211889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777248110944 + 5777248110945.

It is an arithmetic number, because the mean of its divisors is an integer number (5777248110945).

Almost surely, 2^{11554496221889} is an apocalyptic number.

It is an amenable number.

11554496221889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554496221889 is an equidigital number, since it uses as much as digits as its factorization.

11554496221889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49766400, while the sum is 65.

The spelling of 11554496221889 in words is "eleven trillion, five hundred fifty-four billion, four hundred ninety-six million, two hundred twenty-one thousand, eight hundred eighty-nine".