12409216895 has 16 divisors (see below), whose sum is σ = 15863752800. Its totient is φ = 9286078464.

The previous prime is 12409216891. The next prime is 12409216921. The reversal of 12409216895 is 59861290421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12409216895 - 2² = 12409216891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409216891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433970 + ... + 461679.

It is an arithmetic number, because the mean of its divisors is an integer number (991484550).

Almost surely, 2^12409216895 is an apocalyptic number.

12409216895 is a deficient number, since it is larger than the sum of its proper divisors (3454535905).

12409216895 is a wasteful number, since it uses less digits than its factorization.

12409216895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895834.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 12409216895 in words is "twelve billion, four hundred nine million, two hundred sixteen thousand, eight hundred ninety-five".