1313403654665 has 8 divisors (see below), whose sum is σ = 1576117832640. Its totient is φ = 1050700625712.

The previous prime is 1313403654599. The next prime is 1313403654671. The reversal of 1313403654665 is 5664563043131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1313403654665 - 2¹² = 1313403650569 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2525855 + ... + 3001124.

It is an arithmetic number, because the mean of its divisors is an integer number (197014729080).

Almost surely, 2^{1313403654665} is an apocalyptic number.

It is an amenable number.

1313403654665 is a deficient number, since it is larger than the sum of its proper divisors (262714177975).

1313403654665 is an equidigital number, since it uses as much as digits as its factorization.

1313403654665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574511.

The product of its (nonzero) digits is 2332800, while the sum is 47.

Adding to 1313403654665 its reverse (5664563043131), we get a palindrome (6977966697796).

The spelling of 1313403654665 in words is "one trillion, three hundred thirteen billion, four hundred three million, six hundred fifty-four thousand, six hundred sixty-five".