1295129287591 has 2 divisors, whose sum is σ = 1295129287592. Its totient is φ = 1295129287590.

The previous prime is 1295129287589. The next prime is 1295129287601. The reversal of 1295129287591 is 1957829215921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1295129287591 - 2¹ = 1295129287589 is a prime.

Together with 1295129287589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1295129287511) 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, 647564643795 + 647564643796.

It is an arithmetic number, because the mean of its divisors is an integer number (647564643796).

Almost surely, 2^{1295129287591} is an apocalyptic number.

1295129287591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295129287591 is an equidigital number, since it uses as much as digits as its factorization.

1295129287591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 61.

The spelling of 1295129287591 in words is "one trillion, two hundred ninety-five billion, one hundred twenty-nine million, two hundred eighty-seven thousand, five hundred ninety-one".