12209098640 has 80 divisors (see below), whose sum is σ = 28599888240. Its totient is φ = 4847001600.

The previous prime is 12209098639. The next prime is 12209098663. The reversal of 12209098640 is 4689090221.

12209098640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3957919744 + 8251178896 = 62912^2 + 90836^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9471116 + ... + 9472404.

It is an arithmetic number, because the mean of its divisors is an integer number (357498603).

Almost surely, 2^12209098640 is an apocalyptic number.

12209098640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12209098640 is an abundant number, since it is smaller than the sum of its proper divisors (16390789600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12209098640 is a wasteful number, since it uses less digits than its factorization.

12209098640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100 (or 2094 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 12209098640 in words is "twelve billion, two hundred nine million, ninety-eight thousand, six hundred forty".