1295128606449 has 16 divisors (see below), whose sum is σ = 1731789907904. Its totient is φ = 860946667200.

The previous prime is 1295128606411. The next prime is 1295128606463. The reversal of 1295128606449 is 9446068215921.

It is a happy number.

It is not a de Polignac number, because 1295128606449 - 2¹⁶ = 1295128540913 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1295128606469) 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 in 15 ways as a sum of consecutive naturals, for example, 1057239 + ... + 1925619.

It is an arithmetic number, because the mean of its divisors is an integer number (108236869244).

Almost surely, 2^{1295128606449} is an apocalyptic number.

It is an amenable number.

1295128606449 is a deficient number, since it is larger than the sum of its proper divisors (436661301455).

1295128606449 is an equidigital number, since it uses as much as digits as its factorization.

1295128606449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869808.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 1295128606449 in words is "one trillion, two hundred ninety-five billion, one hundred twenty-eight million, six hundred six thousand, four hundred forty-nine".