12256322565340 has 96 divisors (see below), whose sum is σ = 29547926843904. Its totient is φ = 4183207061760.

The previous prime is 12256322565337. The next prime is 12256322565349. The reversal of 12256322565340 is 4356522365221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256322565349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 450404335 + ... + 450431545.

It is an arithmetic number, because the mean of its divisors is an integer number (307790904624).

Almost surely, 2^{12256322565340} is an apocalyptic number.

12256322565340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12256322565340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14773963421952).

12256322565340 is an abundant number, since it is smaller than the sum of its proper divisors (17291604278564).

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

12256322565340 is a wasteful number, since it uses less digits than its factorization.

12256322565340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41627 (or 41625 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 12256322565340 in words is "twelve trillion, two hundred fifty-six billion, three hundred twenty-two million, five hundred sixty-five thousand, three hundred forty".