134434235261 has 2 divisors, whose sum is σ = 134434235262. Its totient is φ = 134434235260.

The previous prime is 134434235249. The next prime is 134434235263. The reversal of 134434235261 is 162532434431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122335555225 + 12098680036 = 349765^2 + 109994^2 .

It is a cyclic number.

It is not a de Polignac number, because 134434235261 - 2²² = 134430040957 is a prime.

It is a super-2 number, since 2×134434235261² (a number of 23 digits) contains 22 as substring.

Together with 134434235263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134434235263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67217117630 + 67217117631.

It is an arithmetic number, because the mean of its divisors is an integer number (67217117631).

Almost surely, 2^134434235261 is an apocalyptic number.

It is an amenable number.

134434235261 is a deficient number, since it is larger than the sum of its proper divisors (1).

134434235261 is an equidigital number, since it uses as much as digits as its factorization.

134434235261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 38.

Adding to 134434235261 its reverse (162532434431), we get a palindrome (296966669692).

The spelling of 134434235261 in words is "one hundred thirty-four billion, four hundred thirty-four million, two hundred thirty-five thousand, two hundred sixty-one".