134243219977 has 2 divisors, whose sum is σ = 134243219978. Its totient is φ = 134243219976.

The previous prime is 134243219963. The next prime is 134243220071. The reversal of 134243219977 is 779912342431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84294992896 + 49948227081 = 290336^2 + 223491^2 .

It is a cyclic number.

It is not a de Polignac number, because 134243219977 - 2¹¹ = 134243217929 is a prime.

It is not a weakly prime, because it can be changed into another prime (134243219927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67121609988 + 67121609989.

It is an arithmetic number, because the mean of its divisors is an integer number (67121609989).

Almost surely, 2^134243219977 is an apocalyptic number.

It is an amenable number.

134243219977 is a deficient number, since it is larger than the sum of its proper divisors (1).

134243219977 is an equidigital number, since it uses as much as digits as its factorization.

134243219977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 52.

The spelling of 134243219977 in words is "one hundred thirty-four billion, two hundred forty-three million, two hundred nineteen thousand, nine hundred seventy-seven".