18064848569 has 4 divisors (see below), whose sum is σ = 18159429120. Its totient is φ = 17970268020.

The previous prime is 18064848563. The next prime is 18064848631. The reversal of 18064848569 is 96584846081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96584846081 = 193 ⋅500439617.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18064848569 is a prime.

It is a super-2 number, since 2×18064848569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18064848563) 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, 47289989 + ... + 47290370.

It is an arithmetic number, because the mean of its divisors is an integer number (4539857280).

Almost surely, 2^18064848569 is an apocalyptic number.

It is an amenable number.

18064848569 is a deficient number, since it is larger than the sum of its proper divisors (94580551).

18064848569 is an equidigital number, since it uses as much as digits as its factorization.

18064848569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94580550.

The product of its (nonzero) digits is 13271040, while the sum is 59.

The spelling of 18064848569 in words is "eighteen billion, sixty-four million, eight hundred forty-eight thousand, five hundred sixty-nine".