134444680889 has 2 divisors, whose sum is σ = 134444680890. Its totient is φ = 134444680888.

The previous prime is 134444680871. The next prime is 134444680901. The reversal of 134444680889 is 988086444431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77284000000 + 57160680889 = 278000^2 + 239083^2 .

It is a cyclic number.

It is not a de Polignac number, because 134444680889 - 2²⁰ = 134443632313 is a prime.

It is not a weakly prime, because it can be changed into another prime (134444680849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67222340444 + 67222340445.

It is an arithmetic number, because the mean of its divisors is an integer number (67222340445).

Almost surely, 2^134444680889 is an apocalyptic number.

It is an amenable number.

134444680889 is a deficient number, since it is larger than the sum of its proper divisors (1).

134444680889 is an equidigital number, since it uses as much as digits as its factorization.

134444680889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21233664, while the sum is 59.

The spelling of 134444680889 in words is "one hundred thirty-four billion, four hundred forty-four million, six hundred eighty thousand, eight hundred eighty-nine".