133256001449 has 2 divisors, whose sum is σ = 133256001450. Its totient is φ = 133256001448.

The previous prime is 133256001443. The next prime is 133256001481. The reversal of 133256001449 is 944100652331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69129555625 + 64126445824 = 262925^2 + 253232^2 .

It is an emirp because it is prime and its reverse (944100652331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133256001449 is a prime.

It is not a weakly prime, because it can be changed into another prime (133256001443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66628000724 + 66628000725.

It is an arithmetic number, because the mean of its divisors is an integer number (66628000725).

Almost surely, 2^133256001449 is an apocalyptic number.

It is an amenable number.

133256001449 is a deficient number, since it is larger than the sum of its proper divisors (1).

133256001449 is an equidigital number, since it uses as much as digits as its factorization.

133256001449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 133256001449 in words is "one hundred thirty-three billion, two hundred fifty-six million, one thousand, four hundred forty-nine".