131395450275809 has 2 divisors, whose sum is σ = 131395450275810. Its totient is φ = 131395450275808.

The previous prime is 131395450275797. The next prime is 131395450275827. The reversal of 131395450275809 is 908572054593131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76939212250000 + 54456238025809 = 8771500^2 + 7379447^2 .

It is a cyclic number.

It is not a de Polignac number, because 131395450275809 - 2⁸ = 131395450275553 is a prime.

It is not a weakly prime, because it can be changed into another prime (131395450275829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65697725137904 + 65697725137905.

It is an arithmetic number, because the mean of its divisors is an integer number (65697725137905).

Almost surely, 2^{131395450275809} is an apocalyptic number.

It is an amenable number.

131395450275809 is a deficient number, since it is larger than the sum of its proper divisors (1).

131395450275809 is an equidigital number, since it uses as much as digits as its factorization.

131395450275809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824000, while the sum is 62.

The spelling of 131395450275809 in words is "one hundred thirty-one trillion, three hundred ninety-five billion, four hundred fifty million, two hundred seventy-five thousand, eight hundred nine".