1312661275017 has 8 divisors (see below), whose sum is σ = 1751290771296. Its totient is φ = 874569647712.

The previous prime is 1312661274983. The next prime is 1312661275021. The reversal of 1312661275017 is 7105721662131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1312661275017 is a prime.

It is a super-2 number, since 2×1312661275017² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1312661275017.

It is not an unprimeable number, because it can be changed into a prime (1312661275067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134461548 + ... + 134471309.

It is an arithmetic number, because the mean of its divisors is an integer number (218911346412).

Almost surely, 2^{1312661275017} is an apocalyptic number.

It is an amenable number.

1312661275017 is a deficient number, since it is larger than the sum of its proper divisors (438629496279).

1312661275017 is a wasteful number, since it uses less digits than its factorization.

1312661275017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268934487.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 1312661275017 in words is "one trillion, three hundred twelve billion, six hundred sixty-one million, two hundred seventy-five thousand, seventeen".