1305053164563 has 4 divisors (see below), whose sum is σ = 1740070886088. Its totient is φ = 870035443040.

The previous prime is 1305053164531. The next prime is 1305053164589. The reversal of 1305053164563 is 3654613505031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1305053164563 - 2⁵ = 1305053164531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1305053164663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217508860758 + ... + 217508860763.

It is an arithmetic number, because the mean of its divisors is an integer number (435017721522).

Almost surely, 2^{1305053164563} is an apocalyptic number.

1305053164563 is a deficient number, since it is larger than the sum of its proper divisors (435017721525).

1305053164563 is an equidigital number, since it uses as much as digits as its factorization.

1305053164563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435017721524.

The product of its (nonzero) digits is 486000, while the sum is 42.

Adding to 1305053164563 its reverse (3654613505031), we get a palindrome (4959666669594).

The spelling of 1305053164563 in words is "one trillion, three hundred five billion, fifty-three million, one hundred sixty-four thousand, five hundred sixty-three".