134273276821 has 2 divisors, whose sum is σ = 134273276822. Its totient is φ = 134273276820.

The previous prime is 134273276801. The next prime is 134273276873. The reversal of 134273276821 is 128672372431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85082472721 + 49190804100 = 291689^2 + 221790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134273276821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134273276801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67136638410 + 67136638411.

It is an arithmetic number, because the mean of its divisors is an integer number (67136638411).

Almost surely, 2^134273276821 is an apocalyptic number.

It is an amenable number.

134273276821 is a deficient number, since it is larger than the sum of its proper divisors (1).

134273276821 is an equidigital number, since it uses as much as digits as its factorization.

134273276821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 46.

The spelling of 134273276821 in words is "one hundred thirty-four billion, two hundred seventy-three million, two hundred seventy-six thousand, eight hundred twenty-one".