12865888237440 has 256 divisors, whose sum is σ = 48135313451520. Its totient is φ = 2861293953024.

The previous prime is 12865888237361. The next prime is 12865888237523. The reversal of 12865888237440 is 4473288856821.

12865888237440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12438982 + ... + 13433541.

It is an arithmetic number, because the mean of its divisors is an integer number (188028568170).

Almost surely, 2^{12865888237440} is an apocalyptic number.

12865888237440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12865888237440 is an abundant number, since it is smaller than the sum of its proper divisors (35269425214080).

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

12865888237440 is a wasteful number, since it uses less digits than its factorization.

12865888237440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25872589 (or 25872577 counting only the distinct ones).

The product of its (nonzero) digits is 165150720, while the sum is 66.

The spelling of 12865888237440 in words is "twelve trillion, eight hundred sixty-five billion, eight hundred eighty-eight million, two hundred thirty-seven thousand, four hundred forty".