1351265489728 has 112 divisors (see below), whose sum is σ = 3344885002368. Its totient is φ = 526180608000.

The previous prime is 1351265489713. The next prime is 1351265489729. The reversal of 1351265489728 is 8279845621531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351265489729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9097338 + ... + 9244678.

It is an arithmetic number, because the mean of its divisors is an integer number (29865044664).

Almost surely, 2^{1351265489728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351265489728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672442501184).

1351265489728 is an abundant number, since it is smaller than the sum of its proper divisors (1993619512640).

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

1351265489728 is a wasteful number, since it uses less digits than its factorization.

1351265489728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149232 (or 149222 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 61.

The spelling of 1351265489728 in words is "one trillion, three hundred fifty-one billion, two hundred sixty-five million, four hundred eighty-nine thousand, seven hundred twenty-eight".