1313564540643 has 12 divisors (see below), whose sum is σ = 1898149603168. Its totient is φ = 875350339920.

The previous prime is 1313564540539. The next prime is 1313564540711. The reversal of 1313564540643 is 3460454653131.

1313564540643 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 5 + 64 + 540 + 6 + 43 = 666.

It is not a de Polignac number, because 1313564540643 - 2²⁰ = 1313563492067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313564140643) 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, 29923003 + ... + 29966868.

Almost surely, 2^{1313564540643} is an apocalyptic number.

1313564540643 is a deficient number, since it is larger than the sum of its proper divisors (584585062525).

1313564540643 is a wasteful number, since it uses less digits than its factorization.

1313564540643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59892314 (or 59892311 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 1313564540643 in words is "one trillion, three hundred thirteen billion, five hundred sixty-four million, five hundred forty thousand, six hundred forty-three".