1312697944161 has 12 divisors (see below), whose sum is σ = 1896136639488. Its totient is φ = 875123938104.

The previous prime is 1312697944079. The next prime is 1312697944231. The reversal of 1312697944161 is 1614497962131.

1312697944161 is a `hidden beast` number, since 1 + 3 + 12 + 69 + 79 + 441 + 61 = 666.

It is not a de Polignac number, because 1312697944161 - 2¹⁴ = 1312697927777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312697944098 and 1312697944107.

It is not an unprimeable number, because it can be changed into a prime (1312697944361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469216 + ... + 1686878.

It is an arithmetic number, because the mean of its divisors is an integer number (158011386624).

Almost surely, 2^{1312697944161} is an apocalyptic number.

It is an amenable number.

1312697944161 is a deficient number, since it is larger than the sum of its proper divisors (583438695327).

1312697944161 is a wasteful number, since it uses less digits than its factorization.

1312697944161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337452 (or 1337449 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 1312697944161 in words is "one trillion, three hundred twelve billion, six hundred ninety-seven million, nine hundred forty-four thousand, one hundred sixty-one".