1313645446563 has 32 divisors (see below), whose sum is σ = 1865736210240. Its totient is φ = 820666613760.

The previous prime is 1313645446507. The next prime is 1313645446567. The reversal of 1313645446563 is 3656445463131.

It is not a de Polignac number, because 1313645446563 - 2²¹ = 1313643349411 is a prime.

It is a super-3 number, since 3×1313645446563³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1313645446567) 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 31 ways as a sum of consecutive naturals, for example, 265656 + ... + 1642517.

It is an arithmetic number, because the mean of its divisors is an integer number (58304256570).

Almost surely, 2^{1313645446563} is an apocalyptic number.

1313645446563 is a deficient number, since it is larger than the sum of its proper divisors (552090763677).

1313645446563 is a wasteful number, since it uses less digits than its factorization.

1313645446563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908439.

The product of its digits is 9331200, while the sum is 51.

The spelling of 1313645446563 in words is "one trillion, three hundred thirteen billion, six hundred forty-five million, four hundred forty-six thousand, five hundred sixty-three".