134426967809 has 2 divisors, whose sum is σ = 134426967810. Its totient is φ = 134426967808.

The previous prime is 134426967643. The next prime is 134426967817. The reversal of 134426967809 is 908769624431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130591890625 + 3835077184 = 361375^2 + 61928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134426967809 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (134426967869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67213483904 + 67213483905.

It is an arithmetic number, because the mean of its divisors is an integer number (67213483905).

Almost surely, 2^134426967809 is an apocalyptic number.

It is an amenable number.

134426967809 is a deficient number, since it is larger than the sum of its proper divisors (1).

134426967809 is an equidigital number, since it uses as much as digits as its factorization.

134426967809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15676416, while the sum is 59.

The spelling of 134426967809 in words is "one hundred thirty-four billion, four hundred twenty-six million, nine hundred sixty-seven thousand, eight hundred nine".