1295129287601 has 2 divisors, whose sum is σ = 1295129287602. Its totient is φ = 1295129287600.

The previous prime is 1295129287591. The next prime is 1295129287663. The reversal of 1295129287601 is 1067829215921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1231889109025 + 63240178576 = 1109905^2 + 251476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1295129287601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1295129284601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647564643800 + 647564643801.

It is an arithmetic number, because the mean of its divisors is an integer number (647564643801).

Almost surely, 2^{1295129287601} is an apocalyptic number.

It is an amenable number.

1295129287601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295129287601 is an equidigital number, since it uses as much as digits as its factorization.

1295129287601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 1295129287601 in words is "one trillion, two hundred ninety-five billion, one hundred twenty-nine million, two hundred eighty-seven thousand, six hundred one".