12359561809 has 16 divisors (see below), whose sum is σ = 14318156160. Its totient is φ = 10449774720.

The previous prime is 12359561803. The next prime is 12359561861. The reversal of 12359561809 is 90816595321.

It is not a de Polignac number, because 12359561809 - 2¹³ = 12359553617 is a prime.

It is a super-2 number, since 2×12359561809² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12359561803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238722 + ... + 285844.

It is an arithmetic number, because the mean of its divisors is an integer number (894884760).

Almost surely, 2^12359561809 is an apocalyptic number.

It is an amenable number.

12359561809 is a deficient number, since it is larger than the sum of its proper divisors (1958594351).

12359561809 is an equidigital number, since it uses as much as digits as its factorization.

12359561809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47640.

The product of its (nonzero) digits is 583200, while the sum is 49.

The spelling of 12359561809 in words is "twelve billion, three hundred fifty-nine million, five hundred sixty-one thousand, eight hundred nine".