1295655685589 has 2 divisors, whose sum is σ = 1295655685590. Its totient is φ = 1295655685588.

The previous prime is 1295655685561. The next prime is 1295655685637. The reversal of 1295655685589 is 9855865565921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1293292072900 + 2363612689 = 1137230^2 + 48617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1295655685589 - 2¹² = 1295655681493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1295652685589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647827842794 + 647827842795.

It is an arithmetic number, because the mean of its divisors is an integer number (647827842795).

Almost surely, 2^{1295655685589} is an apocalyptic number.

It is an amenable number.

1295655685589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295655685589 is an equidigital number, since it uses as much as digits as its factorization.

1295655685589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400000, while the sum is 74.

The spelling of 1295655685589 in words is "one trillion, two hundred ninety-five billion, six hundred fifty-five million, six hundred eighty-five thousand, five hundred eighty-nine".