1311260655466 has 8 divisors (see below), whose sum is σ = 1966905425124. Its totient is φ = 655625513760.

The previous prime is 1311260655437. The next prime is 1311260655469. The reversal of 1311260655466 is 6645560621131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1296799390441 + 14461265025 = 1138771^2 + 120255^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1311260655469) 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 in 3 ways as a sum of consecutive naturals, for example, 2056285 + ... + 2617408.

Almost surely, 2^{1311260655466} is an apocalyptic number.

1311260655466 is a deficient number, since it is larger than the sum of its proper divisors (655644769658).

1311260655466 is a wasteful number, since it uses less digits than its factorization.

1311260655466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813976.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 1311260655466 in words is "one trillion, three hundred eleven billion, two hundred sixty million, six hundred fifty-five thousand, four hundred sixty-six".