12209559415 has 16 divisors (see below), whose sum is σ = 15088435200. Its totient is φ = 9480530592.

The previous prime is 12209559347. The next prime is 12209559419. The reversal of 12209559415 is 51495590221.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12209559415 is a prime.

It is a super-2 number, since 2×12209559415² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209559419) 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, 238647 + ... + 285256.

It is an arithmetic number, because the mean of its divisors is an integer number (943027200).

Almost surely, 2^12209559415 is an apocalyptic number.

12209559415 is a deficient number, since it is larger than the sum of its proper divisors (2878875785).

12209559415 is an equidigital number, since it uses as much as digits as its factorization.

12209559415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524046.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 12209559415 in words is "twelve billion, two hundred nine million, five hundred fifty-nine thousand, four hundred fifteen".