1165323288720 has 160 divisors (see below), whose sum is σ = 3737930400000. Its totient is φ = 299968284672.

The previous prime is 1165323288713. The next prime is 1165323288721. The reversal of 1165323288720 is 278823235611.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1165323288720.

It is not an unprimeable number, because it can be changed into a prime (1165323288721) 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, 34776294 + ... + 34809786.

It is an arithmetic number, because the mean of its divisors is an integer number (23362065000).

Almost surely, 2^{1165323288720} is an apocalyptic number.

1165323288720 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 1165323288720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1868965200000).

1165323288720 is an abundant number, since it is smaller than the sum of its proper divisors (2572607111280).

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

1165323288720 is a wasteful number, since it uses less digits than its factorization.

1165323288720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38537 (or 38531 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 1165323288720 in words is "one trillion, one hundred sixty-five billion, three hundred twenty-three million, two hundred eighty-eight thousand, seven hundred twenty".