12265135640 has 16 divisors (see below), whose sum is σ = 27596555280. Its totient is φ = 4906054240.

The previous prime is 12265135637. The next prime is 12265135643. The reversal of 12265135640 is 4653156221.

12265135640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12265135637) and next prime (12265135643).

It is a self number, because there is not a number n which added to its sum of digits gives 12265135640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12265135643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 153314156 + ... + 153314235.

It is an arithmetic number, because the mean of its divisors is an integer number (1724784705).

Almost surely, 2^12265135640 is an apocalyptic number.

12265135640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12265135640 is an abundant number, since it is smaller than the sum of its proper divisors (15331419640).

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

12265135640 is a wasteful number, since it uses less digits than its factorization.

12265135640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306628402 (or 306628398 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 12265135640 in words is "twelve billion, two hundred sixty-five million, one hundred thirty-five thousand, six hundred forty".