12551446209 has 16 divisors (see below), whose sum is σ = 17095219200. Its totient is φ = 8187733200.

The previous prime is 12551446163. The next prime is 12551446217. The reversal of 12551446209 is 90264415521.

It is not a de Polignac number, because 12551446209 - 2¹⁷ = 12551315137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12551446279) 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, 902692 + ... + 916490.

It is an arithmetic number, because the mean of its divisors is an integer number (1068451200).

Almost surely, 2^12551446209 is an apocalyptic number.

It is an amenable number.

12551446209 is a deficient number, since it is larger than the sum of its proper divisors (4543772991).

12551446209 is a wasteful number, since it uses less digits than its factorization.

12551446209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20300.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 12551446209 in words is "twelve billion, five hundred fifty-one million, four hundred forty-six thousand, two hundred nine".