135386213449 has 2 divisors, whose sum is σ = 135386213450. Its totient is φ = 135386213448.

The previous prime is 135386213429. The next prime is 135386213497. The reversal of 135386213449 is 944312683531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131047620025 + 4338593424 = 362005^2 + 65868^2 .

It is a cyclic number.

It is not a de Polignac number, because 135386213449 - 2⁷ = 135386213321 is a prime.

It is not a weakly prime, because it can be changed into another prime (135386213429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67693106724 + 67693106725.

It is an arithmetic number, because the mean of its divisors is an integer number (67693106725).

Almost surely, 2^135386213449 is an apocalyptic number.

It is an amenable number.

135386213449 is a deficient number, since it is larger than the sum of its proper divisors (1).

135386213449 is an equidigital number, since it uses as much as digits as its factorization.

135386213449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The spelling of 135386213449 in words is "one hundred thirty-five billion, three hundred eighty-six million, two hundred thirteen thousand, four hundred forty-nine".