12805289248440 has 64 divisors (see below), whose sum is σ = 41370934500000. Its totient is φ = 3152071199232.

The previous prime is 12805289248331. The next prime is 12805289248547. The reversal of 12805289248440 is 4484298250821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4104257815 + ... + 4104260934.

Almost surely, 2^{12805289248440} is an apocalyptic number.

12805289248440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12805289248440 is an abundant number, since it is smaller than the sum of its proper divisors (28565645251560).

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

12805289248440 is a wasteful number, since it uses less digits than its factorization.

12805289248440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8208518776 (or 8208518772 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 57.

The spelling of 12805289248440 in words is "twelve trillion, eight hundred five billion, two hundred eighty-nine million, two hundred forty-eight thousand, four hundred forty".