1265344708320 has 1152 divisors, whose sum is σ = 5521442734080. Its totient is φ = 256268759040.

The previous prime is 1265344708319. The next prime is 1265344708351. The reversal of 1265344708320 is 238074435621.

1265344708320 is a `hidden beast` number, since 1 + 26 + 534 + 4 + 70 + 8 + 3 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 830823079 + ... + 830824601.

It is an arithmetic number, because the mean of its divisors is an integer number (4792919040).

Almost surely, 2^{1265344708320} is an apocalyptic number.

1265344708320 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 1265344708320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2760721367040).

1265344708320 is an abundant number, since it is smaller than the sum of its proper divisors (4256098025760).

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

1265344708320 is a wasteful number, since it uses less digits than its factorization.

1265344708320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 1265344708320 in words is "one trillion, two hundred sixty-five billion, three hundred forty-four million, seven hundred eight thousand, three hundred twenty".