11564459993 has 2 divisors, whose sum is σ = 11564459994. Its totient is φ = 11564459992.

The previous prime is 11564459987. The next prime is 11564460091. The reversal of 11564459993 is 39995446511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9172467529 + 2391992464 = 95773^2 + 48908^2 .

It is a cyclic number.

It is not a de Polignac number, because 11564459993 - 2³⁰ = 10490718169 is a prime.

It is not a weakly prime, because it can be changed into another prime (11564450993) by changing a digit.

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 as a sum of consecutive naturals, namely, 5782229996 + 5782229997.

It is an arithmetic number, because the mean of its divisors is an integer number (5782229997).

Almost surely, 2^11564459993 is an apocalyptic number.

It is an amenable number.

11564459993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11564459993 is an equidigital number, since it uses as much as digits as its factorization.

11564459993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 56.

The spelling of 11564459993 in words is "eleven billion, five hundred sixty-four million, four hundred fifty-nine thousand, nine hundred ninety-three".